Overclock Your GameCube Controller Adapter on Steam Deck

Finally, an easy way of doing it, and stays consistent across reboots too!
Turn Your Steam Deck OLED Into a Buttery-Smooth 120 Hz Machine With This Script

LCD models are also compatible with this script to run at 70 Hz.
VKD3D-Proton 2.11 Enables DXR By Default, Improves Performance in Halo Infinite by 15%

Starfield also gets some small performance gains.
No, You Can’t Upgrade the LCD Steam Deck with an OLED Panel

You can’t upgrade to the 50 Wh battery either.
NVK Reaches Vulkan 1.0 Conformance

“This is the first time any Nouveau driver has gotten the Khronos conformance badge on any API.”
You Can Now Run DirectX 8 Titles Directly through GE-Proton

Plus fixes for Fable III and a few other games.
SteamOS 3.5.5: The Biggest Steam Deck Update of the Year!

Display color adjustments, HDR, VRR, undervolting controls, updated Arch base…