DC'ng since feature patch
First off, going to assume you tried everything else that usually fixes the TP and such.
Second, some specs would help
Third, How full is your hard disk? disks with utilization over 80% can get sluggish and I know from opening up a few macs some advertised with a 7200rpm drive come with 5400’s…
Fourth, have you gone through and done the other mac troubleshooting tips posted here and in other threads? they are always a good first goto.
Fifth since the mac client is a Cider wrapper it’s going to take more resources to run on a mac so when they make a graphical change that has a minimal effect on pc it hits us a little harder
Just trying to think of a few off the beaten path solutions to your problems