>"Python backed by uWS is crazy fast, but is not an direct comparison to uWS to Go."

Correction. It shows that uWS is crazy fast. Sure if python us used as a thin glue between something like "select username from user" and uWS or send file over uWS then the result is fast. Do something meaningful in Python itself an it will be slow.

This is not to diminish your work. Python is mostly glue anyways so in average the end result should be quite ok