У вашего броузера проблема в совместимости с HTML5
The game is running at max settings, without any antialias (no needed at 4k).
Keeping 60+ fps all the time.
The game is not very demanding anyway, but the gtx 1060 is also not a 4k graphics card, but even then, you can expect to play some (old/not taxing) games at 4k or 1440p.
SPECS:
MSI GTX 1060 gaming ( non-X ed.) 6G
intel core i5 6500
SSD PNY 120GB
MOBO b150-hd3
8gb ddr4 ram