Ubiquiti routers won't help you; they're even more reliant on hardware acceleration than typical consumer brands, and nobody has put the best modern AQM algorithms into silicon yet. What you really need is a CPU fast enough to perform traffic shaping and AQM in software, which ironically means x86 and Intel are the safest choices.
Well, bufferbloat is at it's worst on slow connections (<100Mbit) and 50 dollars worth of router can fix it there in software.
My Netgear R7000 can't handle my 400mbps connection using qos throttling. I will need probably at least a mid range Ubiquiti router to handle it.