Mac Mini has strange lag issues?

Discussion in 'Mac mini' started by Pandalorian, May 5, 2013.

  1. Pandalorian macrumors member

    Aug 28, 2012
    The antarctic

    about two months ago, i purchased a brand new 2012 Mini with a quad-core i7 and 16GB of ram. with this configuration, it should be a very fast machine, yet for some reason using mission control, resizing windows, etc. is very laggy, i'm seeing framerates of about 20 or 15... seems very strange for a new machine with a powerful config like this one. Any ideas on what i should do?
  2. johnnnw macrumors 65816


    Feb 7, 2013
    I can give you one piece of advice.


    Man are those things slow.

    I had non stop laggy issues before upgrading. Right clicking stuff was delayed, slow minimizing, everything.

    Fine now.

    It's not too hard either.
  3. justperry macrumors G3


    Aug 10, 2007
    In the core of a black hole.
    Open Activity Monitor, select ALL processes from the drop down Menu, then select the %CPU tab so that the Top using processes are on top, then do the things which give you lag and keep an eye on Activity Monitor.


    I have a 2012 Mini, base model, no issues here.
    It has nothing to do with the HD, it seems to be Graphic related.
  4. ab2013 macrumors member

    May 5, 2013
    Recently purchased a 2.3 i7 (mid-level) Mac Mini here. I'm also experiencing lag, but the lag is much more severe on Windows than it is in OS X. The lag is caused when the Mac gets too warm, causing the CPU to throttle.

    In OS X, I installed smcFanControl (it's free) and set my fan to "High RPM"; however, it seems to be unable to read the RPM from the fan sensor. I've also flipped the computer so that it stands on its side (doesn't rest on its rubber bottom), reset SMC, and disabled Bluetooth and WiFi, which I do not use. This allowed my Mac to run at around 70C at idle/light use (e.g. web browsing), which is still warmish but more acceptable. (It previously ran at around 90-100C)

    I cannot solve the throttling issues in Windows, however, which is frustrating. I've noticed that once the CPU core breaks 95C, the GPU throttles to around 500-600 MHz (the 2.3's HD 4000 can turbo up to 1.2GHz) and the CPU drops to around 1.3 GHz, so gaming performance is severely crippled. I've reset the SMC, enabled active cooling, and capped the max performance to around 95% (in Control Panel) ... but the CPU core still breaks 95C under heavy load.
  5. SR45 macrumors 65832


    Aug 17, 2011
    I don't have cross platform OS's on my system, but I do have the 2011 version of the MacMini with 16 GB of ram, i5 cpu, and a 5400 rpm Hdd. No lag for me, so it might be something you did or installed that is the issue.
  6. philipma1957 macrumors 603


    Apr 13, 2010
    Howell, New Jersey
    your machine is broken return it. 70c for light cpu use is wrong. i have the same machine doing lite use as i type it is 115 f or under 48 c. my cpu is cool . look at screen shot

    Attached Files:

  7. palmharbor macrumors 6502

    Jul 31, 2007
    L a g i n g

    Had same issue on my mini....spent all kinds of time on the phone with applecare doing all kinds of things with no solution. Finally has to erase HD
    download the OS 10.8.3 and from my back up restore all files etc. THAT IS THE ONLY THING THAT WORKED
  8. Mr. Retrofire macrumors 601

    Mr. Retrofire

    Mar 2, 2010
    OK. No hardware problem.

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