Why does Firefox have extremely less FPS than Chrome?

Questions
1

https://hiteshsahu.com/farmHouse

This DEMO has 60 fps in Chrome, but 25 fps in Firefox. Why?

2

Pinging @HiteshSahu in case he has some clues.

It’s also at 60fps in Opera.

3

Hi,
I noticed this, too, lately. I.e. this playground runs at 50fps on firefox on my notebook and 60fps on chrome https://playground.babylonjs.com/#3VMTI9#0
I am wondering if firefox is calculating the whole website on one thread so that other parts, such as react might lower performance. I would be surprised if it is an issue of babylon and could imagine its an issue of firefox.