Answer:
Performance problems may be caused by the Fault Tolerant Heap (FTH). This is a Windows subsystem that is responsible for monitoring application crashes to prevent future application crashes.
To check whether the application (RFEM, RSTAB, RSECTION, and so on) is in the list of the applications to be checked, it is worth taking a look at the Windows registry. You will find the list in the following key:
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\FTH\State
As an alternative, you can also view the entries in the Windows Event Viewer. You will find it in the following path:
Applications and Services Logs → Microsoft → Windows → Fault Tolerant Heap
To reset the list of affected applications, run the command prompt as an administrator and enter the following command:
Rundll32.exe fthsvc.dll,FthSysprepSpecialize
The list should then be cleared and the application can be restarted without restrictions. If the problem occurs frequently, you can disable the FTH completely. You can find the procedure and a summary of the FAQ on the Microsoft website.