Just got a new gaming PC. Lately, whenever I'd watch videos on YouTube or other places, the video would be off-sync by like a second or so if I changed tabs and had the video running in the background. The problem corrects itself when I refresh that tab.

I'm not sure if this has ANYTHING to do with my video card or G-Sync, but I just find this issue odd. Any ideas? And is there anything I can gather to provide more info? Thank you.