If it does infact pump 2K gals an hour that should be fine.. you realy should only need a turn over rate of 6 hours.Its a safe bet to say, unless the pump is broken ( how old is the pump? it may just need a new impeller) that it is infact pushing 2000 Gals an Hr and your turn over rate would be 3.39 that is very good.
That means every 3.39 hours all the water in your pool has passed through the filter.(your turn over rate)
Is your concern that the water pressure coming out the returns is not strong enough?
You may not need to buy a new pump... or a more exspensive pump...