У вашего броузера проблема в совместимости с HTML5
Visit our website: http://www.displaylag.com This input lag test was recorded at 120 frames per second. Latency is obtained by counting frames between first keyboard light and first in-game action. All measurements are rounded up to the nearest millisecond. Display lag is included in these measurements; subtract 10ms from final averaged result to receive an approximation of game engine latency.