Ask HN: Bitbucket pipelines, ready for large-scale SaaS project(s)?

We're about to switch from Atlassian bamboo to bitbucket pipelines.

As of now, we're experiencing some drawbacks (for example, the largest instance has 8gb of memory, (severely) constraining test suites). Are there any large-scale builds (>20 dependent microservices) using bitbucket pipelines, and if so, what are the benefits and drawbacks you experienced?

If you decided not to switch to bitbucket pipelines, what did you end up using?