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# Slow Designer responsiveness

Problem: After installing the new version of Service Virtualization, or making a change to your computer, such as installing an update or new software, the Designer responds very slowly, especially when working in the Data Model Editor.

Solution: Modify the Designer configuration file, VirtualServiceDesigner.exe.config, located in `%[INSTALLLOCATION]%\Designer\bin\`. To edit the file, you must have administrator privileges on the machine.

Open the file in a text editor and change the value of `SeV.Global.EnableAutomationFix` from `False` to `True`. If the Designer is open, close it and restart.

If this does not solve the problem, do the following:

1. Change the value of `SeV.Global.EnableAutomationFix` back to `False`.
2. Change the value of `SeV.Global.ClearAutomationEvents` from `False` to `True`.
3. If the Designer is open, close it and restart.

https://admhelp.microfocus.com Service Virtualization 8942
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