Premiere freezes when adding a sequence color adjustment and saturation is adjusted.

So were you planning on everyone needing to as questions? Details matter, so here we go.

Are you using the public beta’s Color Mode, or the current release Lumetri panel? I would guess the public beta color Mode but then you should be posting in the public beta forum, and a mod should move this ... after we’re sure that’s where the problem is.

Easiest way to get to the current shipping forum, or the beta forum, is the forum icon in the upper right of the main Premiere window panel. Click that, your browser opens the forum for that version.