Same here. When requesting historical data for one symbol (252 candles), it can take more than 1 second. When multi-threading to the limit (50 simultaneous requests), you can have 50 data/s. That's very slow, and probably unusable for many. Compared to others (Alpaca for instance), it takes few ms.

Believe it or not, I actually do track my response times of my API calls. During the business day I get a response time of 1.0 to 1.3 seconds per call. Sometimes higher (up to about 2 seconds per API call), but mostly in this range. Off-hours the times are mostly in the 0.8x to 1.2x seconds per API call.

The response time of api requests? What times are you getting at the moment?