Screen Recording API returning 403 during JMeter load test

Stumbled on a weird bug today with the screen recording endpoint. We are hitting POST /api/v2/interactions/screen-recordings with 50 concurrent threads via JMeter to simulate agent ramp-up. The first 10 requests succeed, but subsequent calls immediately fail with a 403 Forbidden and error code screen_recording_access_denied. Our test user has the screen_recording:access capability enabled. Is there a hidden rate limit or token refresh issue causing this abrupt cutoff?