"Locate selection start" suddenly very slow

Hello everyone, not too long ago I updated my macOs to Catalina and Cubase Pro to version 11.0.10. Unfortunately I am now noticing that the “Locate selection start” (L) command is acting very slowly.
As a long time Cubase user I clearly remember that the “L” command used to be very quick and reactive, but now it takes a second or two before the cursor reaches the start of the region.
Same for " Move to cursor" (Command- L) . The region needs a couple of seconds before moving to the cursor.
It happens even in a new project with just one Instrument track and a couple of midi regions.
Has anyone else noticed this?

I am on Mac Pro Late 2013, with Catalina 10.15.7


Double-check, the Transport > Use Video Follows Edit Mode is not enabled, please.

Could you try in Cubase Safe Start Mode [Disable preferences], please?

Hello Martin,
yes "Use Video follow Edit mode"is disabled.

I also tried the Cubase safe start mode but the problem is still there.

thank you