I’ve been using it as my primary browser on Android for years so I don’t really have much to compare it to, but I haven’t had any issues with extension compatibility. It includes changes from Tor browser and Arkenfox so it’s more privacy-focused than on performance.

I’ll just throw out Mull from DivestOS’s third-party f-droid repo as an up to date alternative. The newest versions are incompatible with the main repo but here is their explanation:

Updated Mull to 131.0.0, has 14+1+25 security fixes from the previous 129.0.2 release. In order to resolve the compilation issue introduced in 130, Mull is now compiled using Mozilla’s prebuilt clang toolchain. This however is incompatible with the F-Droid.org inclusion criteria, so these updates (for now at least) will only be available via the DivestOS.org F-Droid repository. Please note, while this adds a prebuilt dependency, the result does still remain FOSS.