Default [Q] video quality with custom rom

I love my S4 with TW but I would prefer custom roms.
I tried dozens but there was always a problem with the video quality.
It looks like TW smoothens YT and embedded videos and every custom rom I know doesn't. (All roms I know!)
Videos are pixelated (except 1080p) and it seems like they aren't even 720p (YT)
Does anyone know a custom rom (or a mod) with a video quality equal to TW quality.

Thanks

Disclaimer:
English isn't my first language.

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