Gravity form with Chained Select not saving

I am using a Gravity form and have added a Chained Select field to the form that is filled from the csv file. If I upload a small csv under 300 kb the form saves with a second or two and works. If I upload anything larger, the chained select takes the file. If the save pushes more then about 4/5 seconds to save the save errors out with a generic error message.

I have tried to look for logs and there is nothing useful. I have checked my wordpress site and gravity forms settings. The upload and timeout settings setting are high enough. What else am I missing or can check?

There are some filters that may be applicable to your situation:

If one or both of those filters do not apply, please open a support ticket:
https://www.gravityforms.com/open-support-ticket/technical/

Thank you.

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