Agent Scripting API 403 Forbidden in High Concurrency Test

Stumbled on a weird bug today with the /api/v2/interaction/agent-scripting endpoint. When JMeter pushes 200 concurrent threads to Genesys Cloud US1, the service account returns HTTP 403 Forbidden. The same config works fine at 50 threads with no errors.

The flow uses a standard Data Action to fetch scripts. Is there a hidden rate limit for scripting APIs during load spikes? Need to validate capacity for peak hours.