Latency issues caused by bad hardware?

Discussion in 'Windows, Linux & Others on the Mac' started by ayeying, Nov 6, 2009.

  1. ayeying macrumors 601


    Dec 5, 2007
    Yay Area, CA
    Possible? I'm beginning to believe so.

    My MacBook Air had the same type of latency issues as described by the MacBook and MacBook Pro users here. The issue seems to be caused by the keyboard manager, the program that controls the F1-F12 keys and such.

    However, has anyone considered bad hardware to also being a cause?

    Before my MacBook Air's fan died last month, running Windows Vista or Windows 7 and even Windows XP creates A LOT of sound studdering, stalling, etc. Even opening a single program while iTunes is running causes the iTunes music to play like its in time warp.

    After my fan died, Apple decided to replace my logic board also (assuming the plug for the fan could've died out also, which was not the case. The fan piece literally broke apart). After getting the system back, Windows Vista (during that time, I had vista installed) didn't have any studdering anymore, even with KBRMGR.exe running (Now called Boot Camp.exe in BC3.0). Running programs are very smooth. I can edit a 10MP image in Windows 7 (current OS now) and play iTunes and have Sins of a Solar Empire (great game btw) running and no studdering. The latency program still shows its "high" but it doesn't have any spikes anymore.

    Anyone want to comment?
  2. XP-User77 macrumors newbie

    Nov 6, 2009
    Try CCleaner and MYdefrag,also disable the QOS service and set your network adapter to full speed and max duplex.

    you can do this by going into network connections right clicking on your current connection,click on properties and un-check any netBIOS or QOS items you see.Then click on Configure...,go to Advanced tab,set flow control to off,set QOS packet tagging to off,and set Link speed&Duplex to the highest setting you can.
  3. ayeying thread starter macrumors 601


    Dec 5, 2007
    Yay Area, CA
    CCleaner... why?
    Defrag... on an SSD?
    QoS... auto works fine.

    It's obvious you don't understand what type of latency problems I'm describing or you'd know none of those works.
  4. ryannazaretian macrumors 6502a


    Sep 21, 2008
    I wouldn't necessarily say that it's all hardware for everyone, but it certainly can be a problem.

    Think of it this way... if OSX works fine, and Windows doesn't, then it's most likely Software (Or the POS Emulated BIOS that Apple created).

    If you did experience the same issues on OSX and Windows, then I would point towards hardware.

    Don't get me wrong, I have the same freaking latency issues (DPC Latency), and Apple seems uncommitted to fix it. It annoys me to no end. They've been investigating the issue with MacBook Pro users running Vista or Windows 7 experiencing hard freezes for almost a year now. Have they gotten anything together yet? No, they want to make Windows feel awful. Why? I don't know, we already overpaid for this piece of hardware only to get no support for something they advertise.

    I don't know what to tell you. You're not experiencing the issues right now, which is great. I have to do the trick that Timur posted, and it has been working great so far.

    I do, however, think the freezing issue is hardware, but Apple doesn't want to say anything about it. In my free time today, I might call to complain about it and the DPC Latency issues. I know it's not a Windows problem. It's an Apple problem that NEEDS to be addressed.

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