Is simulcast enabled in Firefox

I would like to know whether simulcast is enabled or supported in the Firefox browser.

Screensharing from Chrome browser (92.0.4515.159) is very low quality. Remote participants getting only LD video.

At the same time when screen sharing from Firefox, video quality is good and remote participants see HD quality.

I’m doing screen share from the same system and internet. But video quality is different in both browsers.

Remote participants get HD quality when I’m sharing screen from Firefox browser (i mean using jitsi meet in firefox).