У вашего броузера проблема в совместимости с HTML5
Here you can see obvious speedhack with insane accel of Agera.
Old cheats which I saw before was easy to detect by sliptime on checkpoints between me and cheater - it has huge delay. Now it's not.
And also with old cheats in lobby on finish there was not 30 seconds of waiting but few minutes. Now it's shows current time as in normal race.
Old cheats you can find here in my playlist: https://www.youtube.com/watch?v=SQwfSQ2pukE&list=PLAsKPcMxJedMQiwmcUHa5zK60wNmW60D8