Speed on posting sales orders

Hi all Does somebody know about improving of the speed on posting sales orders(Invoice) in Navision 4.0 SP 1? We have some problems with a very slow posting on a 15G database. Thank you!

Hi, we have a client that as a 30GB database and process 5000 lines of orders a day and did not have any performance problems. Can you post your server and client hardware specs. If the hardware is okay, then it’s most likely modifications in your database.