Stuttering system

Hello everyone!
I'm getting a stutters/lags while i'm using my system, everytime i'm using it.
also, while i'm doing this - sounds get laggy too, but...
If i launch some game - sound will become CRAZY laggy, but game is not stable at all (tested with half life 2 and descenders). While this, not only the sound goes crazy - games is stuttering sometimes too (it's not huge stutters, but it's noticeble).

Just open game/app in terminal and post the log.

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