cssbattle.dev is very laggy

[seulgiism]

Hello,

I am running a macbook pro mid 2015 model on the arc browser. Everything runs fine and I have a high speed fibre connection.

However, when I go on cssbattle.dev the lag or input lag is really beyond belief. Especially when animations play during the learning course when you complete something.

Is there a way to fix this from my end?

edit; tested multiple browsers, they all lag. Other websites work normally.