I’m running 10.14 (Mojave) on a late 2016 MBP with Touch Bar.
I’m experiencing the same very high CPU usage to the tune of 130-140% viewed in the activity monitor as well as very very high visual lag.
In addition to very slow visual response from the remote machine I also noticed that the “peel” controls on the top right of the screen animates very slow and stuttering.
Attached is a screen record to show the peel animation.