Hi, can you try unplugging your controller to see if the game is playable in the keyboard/mouse mode? My best guess is that some input on your controller keeps sending a signal to the PC (e.g., one of the sticks is drifting a tiny bit past the dead zone) which forces the game to switch to gamepad inputs.

You can also check if the beta v2.50 update we're working on right now - https://steamhost.cn/news/app/1567440/view/4593196078768271628?l=english - fixes the problem.