Lichess laggy in Firefox

Hi everyone!
I'm using lichess on the latest version of Firefox (Firefox 70) on Windows 10. Whenever I play a game, the pieces start getting laggy. I have used lichess on chrome and Microsoft Edge, but it works smooth there. Is there a way to fix that?
Help is appreciated!

Firefox keeps dropping my pieces as im trying to move them....lichess needs to fix this glitch

Things may get laggy when Firefox allocates too much RAM. Could be one of your addons/extensions that's causing it.
Try menu → Help → Restart with Add-ons Disabled...

I currently don't have any add-ons installed. I tried the safe mode. No results...

No issues here with Firefox 70. The only other thing I would try is a new profile, e.g. firefox -P or about:profiles → create a new one → set as default → restart

@bufferunderrun Thank you soooo much!! It worked! :))