I'm using the recommended template for hosting runners. I'm hosting two services, one with 8 replicas and the other with 2 replicas. 99% of the cost I incurred in last month's bill was because of RAM/memory build-up. It is substantially more expensive than Github's own action runners. I'm curious if I misconfigured something or if something is wrong.

https://hub.docker.com/r/myoung34/github-runner (recommended image used by the template)
Install docs followed: https://docs.railway.com/tutorials/github-actions-runners