5-10 seconds to synchronize 2000 messages is perfectly acceptable.
Yes. But in personal folders it takes 1-2 sec to open the folder. So you
have no intension to do something about it, do you?
There's nothing to be done about anything. If, on the other hand, it took
10 minutes to open a 2,000 message shared folder, then something would
certainly needs to be done. But 5-10 seconds, given the task at hand, is