My Game is Lagging/Slowing Down

I’ve noticed that my game started slowing down/lagging and don’t know what the problem is since this is my first time using this site. If anyone can find the problem, please tell me, much appreciated.

The game works fine when I play it…

for me works fine, what browser and device setup? your browser is full of cache’?

It happened to me too. I switched laptop and now it works fine.