Thanks for the reply. I hear where you're coming from, but what do you think about the details written in the following post, starting at the third paragraph onwards:
It sounds like the MT7628 does better with routing and NAT acceleration than does the QCA9531. While the latter SoC has a better radio, that is not something that matters much for the application which I will use one of these lower cost routers.
I also see mention of SQM in that post, though I'm not as familiar with that function and have not investigated what the implications would be of enabling it. I'll research it further, though if you have any thoughts to share on the pros and cons of enabling it, it would be appreciated.