I have been costumer of WPMUDEV now for some time and have had the opportunity to try almost every plugin offered.
For many of them (specially PRO Sites) there are special requirements for the plugin to work well. I learned in the hard way that PHP 7.2.7 is not good for PRO Sites and it makes some features of the plugin fail. Also there are PHP additional components that have to be installed in order to get everything running with no errors.
That being said, I would like to request a full list of recommended best settings for WPMUDEV products in terms of:
Apache or NGINX version
PHP additional components that should be installed
Current tested WordPress Version
and any additional recommendation. If possible I would like to know exactly the features of the test environment you use to replicate plugin errors reported by the users.