What's the maximum number of output values TB can digest?

Hi,

I am setting up a custom API call and it seems that there is a limit on the number of output values. E.g. in the request I add the number of output items. For some reason, when requesting 70 parameters, the API works fine… However, when increasing this too 200 output items, the API call gives a status 500.

Anyone have had a similar experience when working with the TB REST API?