Direct Editing and Large Coded Domains

We have a client who maintains a large (~13,000) record coded domain of active pesticides. Using the direct edit functionality in Geocortex is effectively unusable due to the built-in functionality. It seems that GCE queries all the coded domains to prepopulate the editor. This results in a 2-5 minute delay between selecting a feature template to use and actually having the ability to edit.

AGOL using the exact same feature service has no problem.

We are working around this with a Workflow but it would be good to have the ability to override the default direct edit functionality of querying the coded domains and only have them accessed when filling out the attributes.