Yeah, I read an article posted by @Joel_Ek, a good read about overlapping WiFi channels. Channels 1, 6 and 11, if I recall correctly, do not overlap, and can often improve performance, so that could help. On reading the article, I checked mine, it was on auto too, but the chosen channel was 6, so I left it. I’ve checked it a few times since, just out of curiosity, and it’s always on 6.
Not sure which article he posted, but here is one, which says the same.