Slow response for HR tcodes PA30/PA20 - impact of Context Solution?

We just implemented the Context Solution for Structural Authorization in our production environment. Through out our testing phase we were aware of somewhat slower performance with the context solution that without it.

However in production we came across a user who needs 30-45 minutes just to get to the PA30 initial screen. As far as I have seen CSSA only impacts data retrieval times and not simply opening the transaction. So we are surprised at this behaviour. She can however run HR reports without any such issues.

Its not a problem with the GUI version for the user as she gets the same error from a different PC as well. The only thing that we could find about this user is that she had access to a huge amount of HR data/objects. Does the context solution have a hard limit on the number of HR objects that a person can have access to?

I would appreciate any ideas!!!............Regards.