Cursor has minimum threshold for mouse speed

[HiPhish]

Game: Jedi Outcast
OS: Void Linux, Wayland, KDE Plasma

The mouse cursor has a minimum threshold for mouse speed before it will move. If you move the mouse slowly enough nothing will happen, regardless of how far you move it. This affects both the cursor in-game and in the menus. The mouse smoothing and mouse sensitivity settings have no effect. This makes aiming the cursor precisely impossible.

[HiPhish]

It looks like this is tied to the resolution of the game. I was unable to set the resolution any higher than 2048 x 1536 in the settings, but adding set r_mode "-2" to my configuration got it running at my desktop resolution where the cursor feels much better.

I don't know if the resolution is supposed to have an effect on the game's cursor movement.