Any Reason Why Our Communication With Rest-API and Unity is Slow?

Unity Engine
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1

We have a Unity3D Game. It sometimes needs to make Rest-API calls to the remote server. Remote server has uwsgi(tried gunicorn, didn’t change much)+python+flask+haproxy+mongodb (I just laid out our entire back-end stack). We use proyecto26 on our game as a rest client driver. The problem is, we sometimes get gigantic latency issues. Normally it’s around 100-300 ms. But sometimes it spikes up to 13000 ms (13 seconds). But when I try our server with postman. I get latency results around 100-300 ms. Any idea what could be the reason?

Our Unity version is 2019.1.4f1

2

You could capture the network conversation with Wireshark. When the problem appears, you can look up if it’s a delay server-side or if the client is behaving strangely.
Your client will trigger more work on the server than postman, so it’s not a reliable (full) test.