My application is an Activex Exe developed using VB6

When i am trying to unload and reload the application immedeately. The App.previnstance property is set to true sometimes. As a result My app becomes very slow. I get this problem in
Win2000 prefessional and sometimes in win2000 server

If i wait for 2- 3 min after unloading then the there is no problem it works fine.

Thank you in advance for the possible solutions.