Issues to consider:
Have you compacted your database recently? It compacts on close, but it happens in every database.
What do your co-workers have that you don't e.g. more RAM? We have the exact same specs on our computers.
What do you have that your co-workers don't e.g. more applications running, less powerful PC, different Office version etc I have a more recent version of access then my coworkers, I just downloaded 2016 to see if that fixed the problem - it didn't.
Are you trying to export a huge number of records? 2500 records, excel doesn't seem to have a problem with it.
Do you get any error messages. If so, what? No error message, sometimes it says not responding but if I wait eventually it will complete the copy or the paste.