How to enable vsync in Librewolf?

Hello everyone, I’m using Manjaro i3 version.
I can’t enable vsync in Librewolf (firefox’s fork). It also doesn’t work with ungoogled-chromium.
I have installed libva-nvidia-driver from AUR and have followed steps for firefox, provided on the github page: GitHub - elFarto/nvidia-vaapi-driver: A VA-API implemention using NVIDIA's NVDEC

Output of inxi -v7azy:

I had palemoon browser at fresh i3 install and there was no screen tearing.
Any suggestions what to do?

What compositor do you use?

Try installing picom