Long import times when importing Nested CDTs

We have recently upgraded Appian to 22.4. I have noticed since the upgrade, when importing packages with nested CDTs that it takes quite some time (anywhere from 10 min - 2 hours) to import the data types.

If there are other data types in the package, it will import all of those and get hung up on the nested data type. Then, if there are other packages to import to the application, they get held up because the first package has not completed.

Has anyone else had these issues or know of a way to fix this? The nested CDTs are just to store information from API calls, and not used to write to a database.

Example of an import with two data types in it, took 21 min to import: