Hi @Dominik Yesterday I tried to increase the render database plan (Bigger Plan for 20$/month). It did not change anything.
IMHO this is definitely NOT an issue with server resources but with render infrastructure itself. I am experiencing different issues there. The one with broken deployments, then with random connection loses to database (even with the bigger payed plan one) after 10 minutes of idle or something.
I created a setup now on digitalocean. Was a smooth experience and (so far!) I am not experiencing any of those connection losses…
Keep you up to date.