У вашего броузера проблема в совместимости с HTML5
GTA V benchmark on pretty close to max settings with my fx 6300 @4.7 and stock speeds. This game is well optimized and uses a good blend of CPU and GPU which explains the huge FPS diffrence between stock and overclocked.
PC Specs:
MSI GTX960 OC (1542MHz core, 3900MHz Memory)
Fx6300 @4.7ghz (1.45v)
gigabyte 970a udsp motherboard
Hyper 212 EVO Max temp in game 70c, average temp 65c
Hyper x fury RAM 8gb @ 1840MHz (stock is 1600MHz)