I have a Thinkpad X250 laptop (Core i7 5600U CPU) with integrated graphics. When I watch video, in some cases (usually window mode + flash player) causes very noticable video tearing effect (almost like interlacing). It usually didn’t bother me (I mostly watch video fullscreen, where there is no tearing).
And the fix? More obvious then i though. Create a file /etc/X11/xorg.conf.d/15-intel.conf with this inside:
Identifier "Intel Graphics"
Option "TearFree" "true"
Yeah, who would have thought I had to enable the "TearFree" option…