Comment by inferiorhuman

   the one key point was that the EdgeRouters had hardware acceleration

The EdgeRouter Lite used a Cavium SoC, the EdgeRouter X family used a 32-bit MediaTek SoC. Hardware acceleration was buggy on both and is/was known to cause packet corruption.

The main problem with the EdgeRouters was that Ubiquiti was basically just assembling off the shelf stuff. They didn't have the ability to fix SoC issues (or motivate the manufacturers to fix them). For years they didn't have the ability to do much Linux dev work either so the ER families languished on an end-of-lifed'd version of Debian. That experience and realization only motivated me to avoid future Ubiquiti products.