For what it is worth, the EdgeRouter X is working just fine in our environment with the most current 1.8 firmware as of the time of this post.

We currently have 168 users connected though it and the router does not yet seem to care. CPU load per the GUI is only at 5 to 9 percent and the memory is at 26%. Traffic being used is currently 21 megs down and 6 megs up. We have a 100/100 connection.

We run all Ubnt gear with AirMax for 5G bridges and all the Access Points being UniFi. (Currently 60+ AP’s installed around this theme park.)