Printing bill crashes the session

Hi team

We have Timeslips 2020 installed on a server. Our billing user is experiencing frequent freezing of Timeslips when she attempts to print. Same issue for other users when they test. I need to kick them off the server and get them to sign back in.

Steps taken:

Default printer is "Microsoft print to PDF"

Recreated her profile on the server

On her Windows 11 device I have disabled UDP traffic, run dism and sfc scans and disconnected other peripherals

Any further suggestions? The freezing does not occur in any other window.

Thanks!