For those running KDE Plasma 6 (Wayland):

• sudo pacman -S switcheroo-control
• sudo systemctl enable --now switcheroo-control

Right-click on the games icon > Edit application > Application tab > Advanced Options > Check "run using dedicated graphics".

In Game setting changes:

• Fullscreen @ 1080p
• Set FOV to 120

Without the PULSE_LATENCY_MSEC=50 %command% in the launch options, I experienced audio crackling, but this command resolved the issue. Furthermore, my integrated GPU could not efficiently handle the game but was being prioritized, preventing the dedicated GPU from engaging. Installing Switcheroo and forcing the use of the dedicated GPU, along with additional in-game setting changes, provided a stable 50-60 FPS, preventing the game from dropping to 12 FPS until a relaunch.

Interestingly, increasing the Field of View (FOV) significantly improved the FPS performance.