It's been pretty reliable for me but I've never used it in production. It's more of a testing grounds-type tool for me or a way to see my work online at a stable URL (which helps motivate me to continue working on something). That's not to say it can't handle production (the multiple hosts aspect certainly indicates it means to support that use-case), just that I can't speak on it.

On thing that's cool (to me) is that I once borked an update of the CapRover admin and while I couldn't get into the dashboard all my projects kept humming along without a care in the world because they were all in their own docker containers. I thought that was pretty neat (all of CapRover runs inside of containers as well and seems to be independent of apps it manages/monitors.