Limitation on importing number of Contract Parties data using Import Management

Summary:

Is there any limitation in importing contract parties details using import management (bulk import) mechanism.

Content (please ensure you mask any confidential information):

When i try to load 50k contract parties, the system is not responding but same works fine if i split the files into 10k each and would complete in 15 min.

Version (include the version you are using, if applicable):

24A

Code Snippet (add any code snippets that support your topic, if applicable):