I got a very weird problem.
My computer is setup like this:
My graphic card is connected to - Main monitor (4K) through DisplayPort, secondary display (1080) through HDMI.
TV (1080) through HDMI to onbard intel graphic card (cause gfx card has no more hdmi ports)
Now, as long as the main monitor is on, everything is smooth on the TV.
But if i turn it off, it will play at like 15fps and be unwatchable.
I tried everything i could think of. I even connected TV to nvidia card, and the issue persisted.
EDIT: I just realized this only happens when playing video through through Chrome!
I do have hardware acceleration on.
So maybe once the main monitor is turned off, it has problems using the gfx card to play video?