I'm running 19.07 since the first release candidate on Ubiquiti gear, no issues so far, with uptimes of weeks.
I should know ; I have a HW accelerated NIC too. Works wonder until the max speed of my optic fiber.
At the same time as this they have attempted to slip a call home function in unnoticed and stopped living up to their obligation to provide source code under the GPL.
Edit: I checked after posting this comment and Ubiquity is once again making the GPL source archive available. It had disappeared for quite a while and there was a bit of an outcry regarding it.