From the top of my head I can’t remember benchmarks being available for Meteor performance, in production, on different server configurations - if this is what you’re asking for.
Also, Monti APM is a monitoring system, like Nagios for instance. It will tell you how your server resources are being used, but won’t automatically improve that usage. How could it?
I suggest you start by reading this amazing resource, where you can learn how best to manage your subscriptions and data loading. Then try the redis-oplog package if your pub/sub problems are caused by large batch updates/inserts in Mongo.
It’s always good practice to test your usage and improve based on results. Here’s an older answer regarding a potential approach: Starting a new project on eCommerce platform, and confused on which JS stack to use? Between MeteorJs and AWS Amplify, which one should we choose and why?