Mendix does not work like Visual Studio .sln projects. The project structure and metadata are tightly coupled with the Studio Pro version, so backward compatibility is limited.

That is why:

• you cannot import/copy modules from a higher Mendix version to a lower version
• even nearby versions can have model metadata differences
• widgets/modules may use newer runtime features not available in older versions

For example:

• 9.24.10 -> 9.24.1
  
• is still considered a downgrade, and Mendix generally does not support importing from newer → older versions.

The same applies to:

• modules
• widgets
• marketplace components
• copy-paste between projects

Usually the supported direction is:

• lower version → higher version
• not higher → lower

Regarding project opening speed:

Large Mendix projects can become slow because Studio Pro loads:

• domain models
• microflows
• marketplace dependencies
• metadata/indexing
• Java actions
• widgets
• synchronization/cache

A few things that usually help:

• use SSD storage
• increase RAM
• exclude project folder from antivirus scanning
• clean deployment/cache folders
• reduce unnecessary marketplace modules
• keep Java and Studio Pro updated

Thanks for sharing your feedback. I understand how frustrating performance issues and version compatibility problems can be.

From your description, this doesn’t seem to be related to Mendix Workstation specifically.

The existing answers in this thread already describe well what can typically be checked and improved in that context.

If you believe that any of these issues are specifically caused by Mendix Workstation, could you please provide a bit more detail on what exactly you observe in that setup? That would help to better understand and investigate the problem.

We appreciate your feedback, and concrete, reproducible cases are always very helpful for further investigation and improvements.

Best regards