UE editor menus lag

As I click on one of these top shelf menus, or main menu - “File, Edit, Window, Help”. Or the viewport’s icons “Perspectove | Lit…” etc. It opens only after 3-10 seconds! Or not opens at all sometimes.

The same issue in the content browser with a Right click on the folder or an item. If I click on the empty space menu opens immediately. Viewport not lagging itself, i can move there pretty fluently.

I have default project settings and props. I updated my Nvidia drivers.
I5-3.3Ghz x 4 ; 16gb ram ; 2tb HDD.

How to fix this lags??

Happening to me as well. It only happens on 5.3 or whatever the newest version is but my version of 5.0 works fine. All the posts I can see with the same issue say to turn gsync off and that should solve it but I have an AMD card and even with free sync off it doesn’t solve the issue. Might just be a bug. Try using UE 5.0 and see if that works.