I have some sort of ASUS. I'm not even sure the model since I never have to deal with it. I don't think I've restarted since applying the config settings about 2 years ago. Although we might get a power outage once a year or so which is essentially a restart.

It's dual band and has great coverage even with the location and radio turned down (in the basement of a 2 story). If you're having issues in 1200sqft, maybe it's a noise/traffic issue?