У вашего броузера проблема в совместимости с HTML5
The standard guards' spotting range (white indicator) and detecting range (reflex mode triggered) for correct FOB camo (Square or Grey Urban) is:
- Spotting: 20m when crawling / 40m when crouching
- Detecting: 10m when both crawling or crouching
Carrying a soldier limits spotting range to 20m.
METAL GEAR SOLID V: THE PHANTOM PAIN
https://store.playstation.com/#!/pl-pl/tid=CUSA01154_00