[lmohseni]

In system preferences, under accessibility, there’s an option to “reduce motion” or something that removes that annoying animation. It’s great!

[romseb]

While this gets rid of the animation itself, the transition to the workspace takes the same amount of time.

[lloeki]

When using gestures, the animations kind of match the gesture, which makes them slow because you can physically cancel them.

But some of these may help. There may be more (or less), it's been a while.

    defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false
    defaults write -g NSWindowResizeTime -float 0.003
    defaults write com.apple.dock expose-animation-duration -float 0.15
    defaults write com.apple.Mail DisableReplyAnimations -bool true
    defaults write com.apple.Mail DisableSendAnimations -bool true

Also, try to use keyboard shortcuts: the animation is muuuuch faster than with gestures. In Keyboard prefpane, Shortcuts, Keyboard, Mission Control (make sure to have many desktops created). I have desktops set to ^1..^0 and left/right to ^left and ^right (which is sadly the only way to move to fullscreen apps), and disable MRU automatic space reordering in Mission Control prefpane.

[zamadatix]

It's got nothing to do with gestures, the key combo has the same switch delay as a quick gesture swipe (Which seems to have the same delay as mission control selection) when switching workspaces.

I've spent more time than I'd like to admit trying to get rid of this workspace switch delay. The tipping point for me on it was switching to a 16" Pro with a 120 Hz screen and finding out that means it now takes longer to switch.

[lloeki]

Got it. In my experience switching with shortcuts takes half a second (which I understand can be annoying, being an i3wm user myself) and is visibly faster than evn quick gestures, which have a slower ease-out for me (but that may be due to how I swipe)

[mort96]

I don't mind the animation, I actually really like the animations in macOS. I just don't want it to take a full second to switch the active window. "Reduce motion" keeps the full-second delay but replaces the nice animation with a less nice fade animation, which is kind of the opposite of what I want.