Victus 15-fb3025AX - quick blue flash on screen, browser video only

HP Victus 15-fb3025AX, RTX 4060, Win 11.

Screen flashes blue for a split second on any video played in browser (YouTube etc) - happens on hover-autoplay and also when switching tabs while a video plays. Not a BSOD, no crash, just a quick flash then normal. Doesn't happen with downloaded/local video files only browser playback.

Updated NVIDIA drivers (clean install), still happening. Anyone else get this? Feels like a browser hardware acceleration/driver issue rather than actual hardware.