Noticeable low fps on 60fps videos on Firefox

[megavolt]

Hello @mutlupide and welcome

That is because GPU accelerations are disabled. On Linux you must explicitly enable it for reasons.

[HowTo] Enable Hardware Video Acceleration / Video Decode In Google Chrome, Brave, Vivaldi And Opera Browsers

UPDATE This guide is severely out of date as Google has changed a lot since I last updated it. However, one might test only these flags: --enable-features=VaapiVideoEncoder,VaapiVideoDecodeLinuxGL --enable-gpu Difficulty: ★★☆☆☆ Requirements: Google Chrome >=88 Brave >= 1.19 Vivaldi >=3.6 Opera >=74 For Chromium and Firefox, see their corresponding Arch Wiki articles: Chromium: Hardware video acceleration Firefox: Hardware video acceleration …