Comment # 8 on bug 79551 from Maxim

(In reply to comment #7)
> (In reply to comment #6)
> > if in /etc/environment set DRI_PRIME=1 and in /etc/xprofile set xcompmgr -c &
> > some apps will display with artifacts (part of window freezes when scrolling)
> 
> Apps using PRIME, or others?
> 
> BTW, just xcompmgr -a should be enough, no need for -c.

others.
Today I've tested with DRI_PRIME=0. Same lags. It's appear, when xcompmgr
running.