Same here. They definitely look much worse on YT.
I read an article about VP8 and VP9 codecs which Google uses and those codecs don't use hardware acceleration. An extension is available H264ify for Chrome and Firefox which will force YouTube to use H264 and hence the GPU.
I'm trying it now.
If it's a driving game with a campaign, try Watch Dogs or The Crew or for great races Forza Horizon3.
Blowing stuff up, Just Cause 3, which is the game I went to after GTA 5.
I flashed the bios to F2G some time ago and whilst it improved the mouse control in the UEFI, it didn't solve the weird double boot issue. It completely powers down for a few seconds on Windows restart or one touch of the ON button and then powers back up. I'm running it with an FX 8320 OCd to...