У вашего броузера проблема в совместимости с HTML5
First skirmish mission of the game, no GeDoSaTo downsampling etc. Just vanilla off-the-shelf 1080p60, which most decent PCs bought later than the 1950s should be able to handle.
Didn't bother capturing the intro or cutscenes because they're upscaled from the original PS3 renders of 720p (yup, all pre-rendered) and there's already a ton of videos of those out there from the PS3 version. In-game itself is amazing though, as to be expected.
Amazing game, amazing port.