Proton 3.0

Updated KSU Manager: Upgraded to the latest version for improved compatibility and feature set.

Upstream to Linux 5.4.290

Fixed some issues

Undervolting Adjustments: Reduced CPU undervolt from 6% to 4% and added a 1% undervolt for the GPU, improving efficiency without compromising performance.

General Optimizations: Applied various tweaks to enhance daily usage, ensuring a more responsive and reliable experience.