Getting too many 429 on Stream creation

We keep getting 429 Too Many Requests error when creating a Stream. ( POST to /talks/streams )
Each end-user in our system requires two open D-ID streams.

ATM, even a single user gets 429 if we don't introduce a 3 second delay between stream creations and even then we sometimes get 429 on the first request.

Could you remove or increase this rate limit? What's the policy around it? As long as it's unclear it's hard for us to mitigate against it. Adding retry policy on our end didn't work either, just keep getting 429.

Also, in conjunction w/ that issue we frequently get this CORS error as well:
https://docs.d-id.com/discuss/65d24cc3ca7840007936b6ac

Thanks