In the "smart sync" window, add a checkbox when installing which the "Difference" button
will only check for differences and mark files without displaying "Tab group diff" and
of course without the warning window "Too many file is selected to open".

Sorry, I'm not sure how to interpret this request. Can you please start with problem description in a star way -- what you wanted to do, what you did, what you got in the IDE and what you expected to get there. Thank you