Migrated PB 11.5 application to PB 2019 R3. Just compiled and deployed the app without any changes in the code. Immediate response from the user(s) were that application performance is 'SLOW'.
Tried with a pb.ini with the following contents
[Data Window] Accessibility=0 [DataStore Behavior] UseHwnd=no
Still slow. Since this is a legacy application, we could not switch the OS to newer one. Current OS
Server -> Windows Server 2008 R2 / Windows Server 2012
Client(s) -> Windows 7 / Windows 10
Clients perform better than Server, still not matching the old performance. PB 11.5 application performed better in Server.
What else I need to do for improving the performance, both in Hardware, Software and OS.