Some users of TOPAS, TOPAS-Academic may be running the program in Windows 8 compatibility mode even when Windows 10 is available. This slows down speed by a factor of around 6. Best to turn off compatibility mode:
- From File Explorer, right click on TA.EXE
- click on compatibility and
- then turn off Compatibility mode
Please send me a quick e-mail
AlanCoelho@bigpond.com if you are one of those running in compatibility mode for Windows 8.