High response times with apollo gateway / federation

Hello !!!

We have a graphql gateway deployed as a pod on azure k8s. this gateway interacts with external sources like commerce tools / adobe and internals k8 services to do authentication and federation. Inspite of scaling and caching(in-memory) we are seeing high response times in our load tests. We don’t have too much logic or doing any heavy ops in the gateway atm. Anyone experiencing this? Any suggestions on ow to optimise this?