Video Playback Lag

Hi everyone,

it's been some time that I've been experiencing micro-lags during the playback of 720/1080p mkv movies (not all of them)
It can be best noticed in the parts of the movie when there's a lot of movement. If I stop the movie and play this part again, the lag is still there. It's not the file's fault because there are movies that I used to watch without any problems some time ago(the same file)

CPU: i7 920 2.6 @stock speed
GPU: HD6950 @ stock speed
RAM: 4GB DDR3 1333 (It used to be 6GB but one module broke)

K-Lite Mega Codec Pack + MPC

I'd like to know what could be causing this and how could I try to fix this annoying problem.

Thank you in advance,

4 answers Last reply Best Answer
More about video playback
  1. Do you have a dual monitor set up? I find with my dual monitors I get a similar issue when I'm running two separate full screen applications (eg. a movie and a game).
  2. No, I'm using a single 32" 3D TV as monitor, and it also happens while I'm playing only the movie =x
  3. Best answer
    You should also install VLC (don't setup as default). If the problem still exists then it's a software issue somewhere else.

    Most likely issue is the video player or linked decoding software.

    *There are TWO main way to decode movies:
    1) CPU (software) decoding
    2) GPU (hardware) decoding

    If the GPU is supported for that codec (i.e. H.264/AVC, MPE2 or VC1) and you also have the DXVA setup in your settings in the video player for hardware decoding it will use your graphics card.

    You should try toggling this on and off.

    You can tell if it's doing hardware decoding by right-clicking-> "filters" (MPC-HC). It will say "MPC Video decoder" (as opposed to something like "ffdshow video" for software decoding on the CPU.)

    **Also, CCC for my last AMD card was enabling Advanced Video decoding (such as flesh tone) that really screwed up my video look (grainy etc). I disabled all the Advanced Video in the Catalyst Control Center.

    Software decoding doesn't utilized the Advanced Video features.

    - try VLC as well
    - try toggling hardware acceleration ON and OFF
  4. Best answer selected by Siq.
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