SteamDeck-RefreshRateUnlocker VS steamos-btrfs

Install SteamDeck RefreshRateUnlocker and reboot ( I installed the full FPS range, 30-70). Set the game's refresh rate to 70 (Not 35) and the GPU clock to 1600.

Damn I didn't remember that didn't go all the way to 30 hz! Try installing this, don't know for sure if it'll work on an external monitor though https://github.com/ryanrudolfoba/SteamDeck-RefreshRateUnlocker

It is indeed possible with Refresh Rate Unlocker

If you need a visual guide the developer of this mod has a official github that has its source code and guide on how to do it yourself from here: ryanrudolfoba/SteamDeck-RefreshRateUnlocker: Unlock the display panel to use upto 70Hz refresh rate! (github.com)

cd ~/ git clone https://github.com/ryanrudolfoba/SteamDeck-RefreshRateUnlocker.git

I've been playing with the 70hz mod: https://github.com/ryanrudolfoba/SteamDeck-RefreshRateUnlocker It works great for 70hz on old games of course, but I think even better is locking to 35 for newer games. Of course, whether you agree or not is subjective, but personally i've been really impressed with performance and clarity in many games when using it this way.

I used this script to allow a lower screen refresh rate of 30hz. That with a 30fps cap feels buttery smooth and saves power by allowing lower TDP settings to reach the reduced refresh.