Subscriptions receiving Invalid TCP frame received

This would be unusual for us to have a page size that has changed. Is there a way to query the eventstore for a unusually sized page? It might give insight into a potential code issue …

You don't seem to understand. A catchup subscription reads data by
pages (eg 100 events at a time or 500 events at a time etc). Likely
you have a high setting for the page count on the subscription and
large events in the page. It should be reduced either way.
is the setting.

My apologies, up until this week I didn’t know anything about event store.

I think I am understanding now and appreciate all the help.