Access these settings by clicking the at the bottom-left of Discord. Disable Hardware Acceleration : Path : Settings > Advanced.

: The overlay constantly renders on top of your game, which consumes CPU and GPU resources and can cause stuttering. Optimize Voice & Video : Path : Settings > Voice & Video.

: Turn off Debug Logging at the bottom of the section.

: This feature uses your GPU to make Discord smoother, but in GPU-intensive games, it can steal power needed for frames. Disable In-Game Overlay : Path : Settings > Game Overlay. Action : Toggle Enable in-game overlay off.