If you change spaces using the keyboard shortcuts like Ctrl+1,2 etc. (they might not be set to that by default.. it's 'Switch to Desktop 1' etc in the settings)

If you change spaces using the keyboard shortcuts like Ctrl+1,2 etc. (they might not be set to that by default.. it's 'Switch to Desktop 1' etc in the settings), then there is still a shorter animation, and there is no input delay when switching.