Ещё один форк лисы.
https://thorium.rocks/mercury
> Compiler optimizations include AVX, AES, LTO and PGO.
> Patches and UI changes that enhance useability, and strengthen privacy/security.
Many of these come from LibreWolf, Waterfox, FireDragon, PlasmaFox, and Ghostery.
> This nets a 8-20% performance improvement over vanilla Firefox, depending on the benchmark and OS.
Не пробовал, просто здесь оставлю.