I recently installed 3scale 2.6 using the operator and the default CR settings on a OCP4.1 cluster which had autoscaler enabled. The installation resulted in node addition but the deployment failed (backed-redis, system-redis and apicast production deployments timed out).
In the end the installation failed and had to redeploy manually some components, while Zync didn't create all needed route (not sure if related to the failed deployments).