MATLAB: MATLAB or Simulink is suddenly very slow after a crash (Windows)

%sbugcrasherrorfaultfthfunctionheaplaglaggyMATLABs-functionsimulationsimulinkslowtolerant

Why MATLAB or Simulink is suddenly very slow after a crash (Windows)?

Best Answer

This issue was resolved many times by disabling the Fault Tolerant Heap of Windows.
You can check by looking for this registry entry:
Go to the
HKEY_LOCAL_MACHINE
and
HKEY_CURRENT_USER
versions of
Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\matlab.exe
and delete the
Fault­Tolerant­Heap
entry.
To fully disable this service in Windows (or to understand what this service does), please read the documentation:
https://docs.microsoft.com/en-us/windows/win32/win7appqual/fault-tolerant-heap
If your issue is not resolved after disabling this service, then please create a Technical Support ticket.
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