We once have a similar case like what you describe, but it happened back when AMD just released the Ryzen line. It was fixed in a BIOS update, but I'm not sure if this is a regression issue with their new driver.
Back then, we suggested the user using "Game Mode". Although it will disable half of the processor's cores, due to Threadripper’s complicated architecture, it presents challenges to applications that synchronize threads for calculations or require frequent fetches from memory, so this setting might improve the slow performance in ARCHICAD.
I would like to try one more thing test as well:
- Run cmd.exe it as an Administrator.
- Type: bcdedit /enum (see bcedit_view.jpg attachment)
- Look for “useplatformclock” and whether the value is set to yes.
- In case the value is yes, run the command: bcdedit /set useplatformclock false
- To be on the safe side, run also the command: bcdedit /deletevalue useplatformclock
- Reboot the machine and check again the responsiveness of the machine with ARCHICAD.
This will disable HPET
Let me know if the above tests help in any way.
Looking forward to hearing from you!
Technical Support Engineer