Screen Recording API 429s during load test

Trying to understand rate limits for the screen recording API. running jmeter 5.6 to simulate 50 concurrent agents starting recordings in us1. hitting 429 Too Many Requests after 10 minutes. the docs say:

“Rate limits are applied per tenant for recording initiation.”

but not clear on the exact threshold. is there a specific limit for /api/v2/recordings/screens? need to adjust my thread group to avoid hitting this wall during capacity planning.