Advanced Wireless Settings

I experimented with enabling MU-MIMO and did not have any bad results or anything like that, so if you want to enable it, I think you'll be just fine - I doubt you'll see any issues.  I just keep it disabled for simplicity's sake.

I have 100/10 service from Comcast and I consistely get 120+/12+ on speedtest ressults all over my house and front/back yards.  On the DSLreports speed test, I get A or A+ on overall quality, and bufferbloat.

I'm absolutely thrilled with how welll my Orbi works - I've had mine since they were launched in the fall of 2016, and I've had very few (and only minor) issues with it during that time.  Overall, it's been the best router I've ever owned, no question!