Your svelte and rutaflow-app services are still running on legacy regions. You'll want to swap them to same metal region as your other services (US West - California) to prevent added latency if communicating between services.

Are you using private networking to communicate with your database ?

I’ve already moved my services to the US West – California region and enabled private networking for database communication, but I’m still seeing the same high latency that’s impacting my apps. Could you help me understand why the private network isn’t improving performance and what else I might need to configure?

Are the requests still taking >1s through the private network ?

Yes, the requests are still taking over 1 second—almost 2 seconds—even with private networking. I actually noticed they take even longer now .

❌ The internal ticket MySQL performance issues on metal has been marked as canceled.

Your services are not using private networking to communicate with your database. Please see documentation here: https://docs.railway.com/reference/private-networking

I decided to make tests with the private networking in my development environment in the service that has my api and i noticed that the requests last longer, the latency increased so i didn't change anything in production, thath's why i'm not using in all my enviroments the private networking.
I add two screenshots that has the timing of the development enviroment using the private networking and the second is from my production enviroment using the public networking.

Comparing response times in production against the development environment would not be a good apples to apples comparison.

Please switch to the private network and then we can go from there, using the public network is not something we can recommend.