Have you considered switching to one of the newer ASGI based web frameworks?

I would like to recommend FastAPI

Among other things, I believe this project would greatly benefit from these features.

1. Automatic Swagger/OpenAPI API documentation tools (and ReDoc)
2. Handle more simultaneous request. Benchmarks
3. Ease of development

I would be happy to work on this if it's something you think the project could benefit from.

https://fastapi.tiangolo.com/alternatives/
https://fastapi.tiangolo.com/advanced/wsgi/