When enabling or using the BI Connector with M10 or M20 instances, some customers may experience perf degredation. We'd like to add the following text to the documentation:
MongoDB Atlas Sizing Guidance:
The MongoDB Connector for Business Intelligence (BI Connector) is a powerful tool which provides users SQL-based access to their MongoDB databases. As a result, the BI Connector performs operations which may be CPU and memory intensive. Given the limited hardware resources on M10 and M20 instances you may experience performance degradation of the cluster when enabling the BI Connector. If this occurs, upgrade to an M30 or greater or disable the BI Connector.