Do you have any possibility of checking it on another system?
I haven't noticed anything of the kind. So it might have something to do with your work station.
Unless more people can verify that they have the same issue
EDIT: also, check to see if you have it on multiple versions of the Mendix Modeler, or if you have this issue with only one version.
Maybe the following possibly related posts can help you to solve your problem. If so then please let us know for documentation.
Hope you find a solution! Do you experience the same issue for multiple projects or is it just one of them?
One colleague and I are having similar issues with 7.13.1 while running a model locally. Some findings:
We see the same problem in Mendix Modeler 7.17.2. I just found out that the trouble starts after opening an extremely complex page in the modeler. If you then close the modeler and then rename the project folder, it will be fast again.
I renamed my project folder, Mendix 7.23 is still very slow, to the point windows says “Not responding”. Just for saving files. It’s a big project, but still unacceptable.
This is still an issue in Studio Pro 9.0.5. Somehow this only occurs on my desktop and not my laptop.