Also an excellent option. If any AIO has the chance to pull it off, the R7800 might be it. OpenWRT is also reported to run rock-solidly on it, so that's also an option.Did you look at Netgear R7800? Wireless AC Wave 2, excellent hardware, very stable software, DFS channels support, one of the best WiFi throughput and coverage in AIO category
I fully realize that. A lot of what I proposed is complicated. And not sure if the guy owns his place or rents (probably rents), so running wire or bring in a helper might not be appropriate. I could have just left a "just throw an R7800 at it and you should be good to go!", but felt like adding some more possibilities which may (probably could) do a better job for him. Not sure how serious he is or isn't here. Especially if he has the skill level, they could be relevant.
but felt like adding some more possibilities
@geodeath - How flexible is your budget and how intent are you on ending your issues and/or just getting it handled?
I realize you probably wouldn't even be here if you could do the following, and this may sound like bringing a nuclear weapon to a gun fight, but if you do have the means, you might consider hiring this out to a high-end residential AV/networking outfit in your area. Something like London AV Solutions, or similar. The cost level is obvious, but the value here is of course their expertise is being able to navigate past your very challenging environment (from the sounds of it). I figured I'd at least mention it because some people who do have the financial means aren't even aware that the option exists in most markets.
Beyond that, if you still want to DIY, you indeed might be able to get away with a higher-powered all-in-one or single AP, but trying to combat all that RF interference from a single cell may be a losing battle. A better option would be to wire as much Cat6 as is needed and run multiple APs set to very low power, using a centralized wifi product (Omada, UniFi, Cisco WAP, etc.) all connected to a PoE switch and wired router (or wired combo unit like a Cisco RV260P). Either way, the general approach would give you the ability to get as much clean signal as close as possible to your wifi clients, while also having the reliability and bandwidth of wired backhaul and manual control over channel usage (ie. no whole-house mesh systems).
One step further still would be running a wifi product purpose-built for interference mitigation, such as Ruckus. Expensive? You bet. But properly setup, I've seen it simply end people's issues in situations like yours more often than not. Their proprietary beam-steering and PD-MRC works above and beyond the typical standards-based implementations, as does their auto channel selection algorithm, which optimizes channel choice based on client load, traffic flow, RF co-interference, throughput overhead and topology awareness. That will probably be called out as unicorn dust by some here, and that's cool; all I know is I've seen it work enough times when other things wouldn't (including Cisco Aironet), that it must have some value beyond just buying more UniFi or another AC86U and calling it a day. But then again, I'm only one guy, so what do I know.
Additionally, all of the above isn't to say static channel assignment and/or disabling DFS, in-part or altogether, isn't the right thing to do for certain scenarios, but just know that at least some of how you can optimize your wifi experience is due to gear selection as much as it is your environment.
Hope some of that helps, and forgive some of my suggestions if they're way above and beyond.
I would say an R7800 would be a great AIO solution then.
Did you look at Netgear R7800? Wireless AC Wave 2, excellent hardware, very stable software, DFS channels support, one of the best WiFi throughput and coverage in AIO category.
OpenWRT isn't that hard to setup and install; it comes with a web GUI pre-loaded and enabled (kind of like installing and running DD-WRT). Apparently it's rock-solid on the R7800, so that's assuring.
Synology RT2600ac... Synology is just slightly easier to use
Probably the best UI on a consumer product. Very strong selling point, actually. Excellent product, but expensive as R7800.
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