basically , this is for those platformer "speedrun challenge" projects. it is fps dependant , if you exit the tab , the timer variable (orange one) will run super slow. if you turn on turbo mode or use some kinda browser extension or turbowarp , it'll run faster. in normal mode , its usually almost accurate
try going to https://turbowarp.org/641883251?fps=60 https://turbowarp.org/641883251?fps=120 https://turbowarp.org/641883251?fps=180 https://turbowarp.org/641883251?fps=250 all of them will run at different speeds x)