All video from NAS stutter. Only on iMac

Discussion in 'Mac OS X Server, Xserve, and Networking' started by Milew23, Feb 20, 2017.

  1. Milew23, Feb 20, 2017
    Last edited: Aug 13, 2017

    Milew23 macrumors newbie

    Joined:
    Jun 27, 2013
    #1
    I have a late 2012 iMac i7 16gr RAM 3.4GHZ I have a 3TB WD NAS attached to my Nighthawk R700 router. No matter what, when I watch a video that is on the nas it freezes ever few minutes. It doesn't do this on any other windows computer or android OS. Half the time quicktime won't open the file and if it does it stutters too. I use VLC for most since it will play anything. How can I pin down what is causing this? It ONLY happens on the iMac. I have removed and re-installed VLC and it is up to date, so is the mac
     
  2. belvdr macrumors 603

    Joined:
    Aug 15, 2005
    #2
    What's the network connection for the iMac and other systems? Has the network connection on the iMac been modified, such as MTU or speed/duplex?
     
  3. bfChris2, Feb 20, 2017
    Last edited: Feb 20, 2017

    bfChris2 macrumors newbie

    Joined:
    Apr 27, 2014
    Location:
    Virginia, USA
    #3
    I do not have the technical particulars, but the IT folks at work discovered that the Unix under the hood of MacOS (El Capitan? or just Sierra?) uses a new version of SMB Signing. Older versions performed a secure handshake to start the connection, but then packets were exchanged without signatures. This new version signs each packet cryptographically. The IT folks found that turning off SMB Signing doubled network speeds. So, especially in your case (it sounds like a small network), you don't need such strong crypto and can turn it off. I don't know that this is the cause of your issues, but it is worth investigating.

    more info: https://blogs.technet.microsoft.com...s-of-smb-signing-covering-both-smb1-and-smb2/

    While you're using a Mac, your NAS detects that your Mac has SMB Signing turned on, and so it automatically encrypts packets. If you're not concerned with man-in-the-middle attacks on your network, you can turn off SMB Signing on your Mac, and the server should gracefully degrade to unsigned packets.
     
  4. Milew23 thread starter macrumors newbie

    Joined:
    Jun 27, 2013
    #4
    I have a wifi dual band AC adapter 5g that I have in my PC since the network card pre installed was crap. Nothing has been modified though. Maybe I will try to uncheck the SMB? Thanks
     
  5. belvdr macrumors 603

    Joined:
    Aug 15, 2005
    #5
    I have read this too, but have not been successful in modifying the Mac side. Unfortunately, your link only covers Windows.
     
  6. aedigitaltv macrumors newbie

    aedigitaltv

    Joined:
    Dec 23, 2013
    #6

    Try this Apple support doc: https://support.apple.com/en-us/HT205926
     
  7. belvdr macrumors 603

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    Aug 15, 2005
    #7
  8. Milew23 thread starter macrumors newbie

    Joined:
    Jun 27, 2013
    #8
    So is there an actual solution? Turning off SMB didnt work. This is awful. I pay 3k for a damn computer adn cannot even watch movies from a network attache storage device that also cost 200$ connected to a 200$
    + router! Why ar macs to difficult? What do I need to do here? I have a dman i7 with 60mb dowload speeds and it happens on every single video I try to play. NEVER happens on windows or android!
    --- Post Merged, Feb 27, 2017 ---
    How would i check to see?? I have nevr changed any network settings on that computer.
    --- Post Merged, Feb 27, 2017 ---
    Also, this only happens from the NAS. Netflix, youtube, etc are all fine and watching locally are fine but I cannot just copy GB's of movies just because my computer that cost as much as a car cannot figure out how to play a video. It is bad enough that quicktime doesn't open anything. I am so beyond frustrated at this computer, how much it cost and how little it does without end user config over and over.
     
  9. Milew23 thread starter macrumors newbie

    Joined:
    Jun 27, 2013
    #9
    Can anyone give an explanation, aside from posting a useless manual? This is ridiculous and I cannot believe I paid this much for a computer that can barely do ANYTHING without downloading 45 3rd party programs. Insane! I really need some assistance with this. How is it that any pc, any! Will work without stuttering, I mean, even on my phone I can watch videos over the NAS and get NO stutter/stopping.

    I open a video....cannot open with quicktime so I open with VLC, stutters. Copy it locally and it is fine. How is it that such an expensive machine could be so ****ing useless?
     
  10. haddy macrumors regular

    Joined:
    Nov 5, 2012
    #10
    I have this problem if I use a wifi connection at "slightly out of range".
    No problems when using an ethernet cable. iMac-Synology DiskStation..... RJ45 connection.
     
  11. Gjwilly macrumors 68030

    Joined:
    May 1, 2011
    Location:
    SF Bay Area
    #11
    Which model WD NAS?
    They usually come formatted as NTFS which your iMac can not natively write to so do you simply live without ever writing to the drive, did you reformat it to a file system compatible with both Mac and Windows, or did you install a 3rd-party driver to allow write access from the Mac?
    If you went with a driver, especially a free or old version, I think that could be slowing down your read speeds.
     
  12. Mikael H macrumors 6502

    Joined:
    Sep 3, 2014
    #12
    The underlying file system is irrelevant as long as the storage is network shared. The inability to natively write to NTFS volumes of macOS would only affect direct attached storage.
    --- Post Merged, Aug 12, 2017 ---
    1) Is the 2012 model year a typo? Otherwise that might be a good reason for VLC playback stuttering: your CPU being too old for modern high(er) quality video formats.

    2) If the 2012 model year was a typo: Does this also happen if the iMac is connected via a network cable? Try that to rule out network transfer speeds between the router and the iMac as a reason for the stuttering.
     
  13. haddy macrumors regular

    Joined:
    Nov 5, 2012
    #13
     
  14. Milew23, Aug 13, 2017
    Last edited: Aug 13, 2017

    Milew23 thread starter macrumors newbie

    Joined:
    Jun 27, 2013
    #14
    Why would it be a typo man? It cost 3k! Why wouldn't it be able to play a 250mb video over the network without stutter? No, I have no ethernet drop in my house and no cord long enough to get to the router. It is also 3.4ghz. I do not believe CPU is the issue, it is the fact that it is a mac it always is. And I have a 10 year old laptop that doesnt do this when doing the same thing. Thanks
    --- Post Merged, Aug 13, 2017 ---
    It is just WD Mybooklive and by the way, it doe not do this on 10 year old pc laptops over the NAS, so I do not buy that my 3,000$ imac isn't "good enough" to play videos over the network, I see no way to reformat my NAS to a file system compatible with both..what do I need to do to accomplish this or what driver would I use? I cannot stand that I have to do 400 things and download external software/drivers just to get a computer to something to basic. So how to I go about formatting so it works? And which driver are you talking about? I have not installed anything extra such as drivers. Do I need to? Which one? Thanks
    --- Post Merged, Aug 13, 2017 ---
    how do I turn that off? when I go to sharing/file sharing and uncheck SMB it turns off file sharing. Is that the same as trning off SMB signing? If not, where do I do that? I really need the file sharing
    --- Post Merged, Aug 13, 2017 ---
    It says this, too, when looking at mybooklive
    The Western Digital units mentioned below use a proprietary file system and cannot be reformatted as FAT32, NTFS, or a Mac File System.

    The file system on the My Cloud and other WD NAS devices support access from Windows, Mac and most Linux based computer systems through a SAMBA network sharing connection.

    so, isn't it saying it SHOULD be compatible, already, with mac?
    --- Post Merged, Aug 13, 2017 ---
    It also takes forever to even open the NAS folder. On EVERYTHING other device when you click it, you are in, the mac....nope, takes 30 seconds to open the main folder, then 30 seconds or more for any other folder, then another minute to load the content of the NAS. I really thought with the BS the Mac associate fed me about how this was the "top of the line" that I wouldn't have such basic issues. I am SO mad at this purchase, warranty is expired and apples makes yu pay just to get basic questions answer, which never fix the issue. I will probably punch a hle through this POS before it is all said and done. if it isn't one thing, it is another. I mean, basic stuff..like the fact that in order to open a pic in FULL screen, and hit the next arrow to get to the next photo...I have to import 1000000000 pictures to iphoto...which takes FOREVER. Haha it is nuts. I love windows. Things just work, almost every time. Pics? Sure open in full screeen and hit next and guss what????? it goes to the next pic without having to wait all day to transfer a million pics to another application. Wow, just wow. I jus want to be able to do BASIC stuff...like watch a video without having to copying it locally every time I want to do so. Am I the only one with this issue? I cannot be. Sorry fr the rant but christ! Macs are a friggin nightmare! You get it and are all excited, then end up filled with hate!
     
  15. Mikael H macrumors 6502

    Joined:
    Sep 3, 2014
    #15
    Because if it's a 5 year old computer then it might not yet have had the horsepower to flawlessly display x265 (HEVC) video content no matter what it cost when new simply because of the strain software decoding such content puts on the CPU. If you get those same issues with other video formats (or if it works flawlessly with identical hardware running other software), then that is probably not the issue.
    But really: it's ridiculous to yell about how expensive a 2012 machine was five years down the line, unless you're still doing 2012-era tasks with 2012-era software on it and it suddenly stopped being able to perform them as well as it used to. The first thing to check should always be "should my hardware be able to do this at all, and what performance can I expect?" The retail price of the hardware is utterly irrelevant. Hardware specs vs hardware requirements is what counts.

    Now, to continue troubleshooting:
    1. Are you presenting the Mybook storage through your router, or are you just using the router to provide network to the Mybook and using the NAS functionality in the Mybook for serving content?
    1.a. Have you activated apple shares (can be called AFP, bonjour, avahi, netatalk, or similar), or do you only use Windows shares (may be called smb)? If possible, turn off Apple file shares and run SMB only. Literally the first thing that popped up in my search results when I searched for "mybook live performance mac" was a bunch of people having extremely slow transfer speeds across network; some with Macs, and some with Windows PCs. Turns out the WD drive runs some kind of Linux server under the hood, and as usual it seems to have (or have had?) some wonky config out of the box.
    1.b. If you have an option to turn off real-time indexing on the NAS, try doing so to see if it improves performance.
    2. I really do insist on trying to connect to the Mybook over a wired connection directly, and over a wired connection via the router to try to identify the bottleneck.

    To conclude, I'm pretty sure that the problem isn't with the Mac per se.
     
  16. LewisChapman macrumors 6502a

    LewisChapman

    Joined:
    Jan 10, 2015
    Location:
    UK
    #16
    We used to use two MyBookLive's as our primary NAS service not so long ago but as soon as Sierra came about the speeds dropped horrendously and we decided to invest in another manufacturer. We now use them as backup drives but the speeds are still atrocious.

    I'm sure I read a while back it has something to do with a change in SMB versions that Sierra introduced but I don't have a source for this!

    You could try connecting to the drive in Finder with an AFP connection and see if that is any better?

    I can understand this is not much help but just thought I'd mention.
     
  17. northernmunky macrumors 6502a

    northernmunky

    Joined:
    Jan 19, 2007
    Location:
    London, Taipei
    #17
    Open Terminal, type:
    cat /etc/nsmb.conf

    The result I had on mine was already default:
    [default]
    signing_required=no


    If you see this text, you're SMB signing is already off.

    If you do NOT see this, type:
    sudo -s
    (type in your password)
    echo "[default]" >> /etc/nsmb.conf
    echo signing_required=no >> /etc/nsmb.conf
    exit


    Reboot, and try it again.
     
  18. Milew23 thread starter macrumors newbie

    Joined:
    Jun 27, 2013
    #18
    I installed windows 10 with bootcamp and I have not experienced this issue at all. Folders load instantly and all videos play without stutter. So this is an os issue, not performance. At least in my opinion. Only bad thing, now, is that the mac will not recognize the wireless keyboard and mouse so I am using ones via usb.
     
  19. northernmunky macrumors 6502a

    northernmunky

    Joined:
    Jan 19, 2007
    Location:
    London, Taipei
    #19
    Did you try that?
    Also all my NAS drives also support AFP which will be better with your Mac anyway rather than using SMB.

    Just connect via afp://192.168.x.x
     
  20. Milew23 thread starter macrumors newbie

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    Jun 27, 2013
    #20
    i had already started the windows installation when I saw your post but I will do this and report back with the results.
     
  21. Idgit macrumors 6502

    Idgit

    Joined:
    Mar 14, 2004
    #21
    With NAS and macOS, use AFP or NTS. Apple's implementation of SMB is still garbage.
     

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