Rhino 6 locking takes so long

Hi, I’ve been using rhino 5 for few years and, a couple weeks ago I changed to rhino 6.
And I figured out that locking(+ isolate/ block edit) command takes so much time compared to the past rhino 5.
Is there any reason? or anyone who has experienced the same situation?

Hi Drew - please run the Rhino SystemInfo command and post the result here.
-wim