OK, I don't know what the problem is, so I'll just explain what I did.
AP is running ver 2.9.48 on 112 board, Ubiquiti SR5 radio. Client is running ver 3 RC9, on board 133c, R52 radio. 5Ghz band, 5180 MHz
It *feels* slow, if you do a ping you see many time outs.
So, we downgrade the client to 2.9.48 remotely (he's 120 Km away, so I really don't what to drive there) and live is beautiful again, it *feels* much faster, says the client and no time outs at all when pinging.
So, with 2.9.48, it works not with 3 RC9, WHY??? Are there any default parameters that change from one version to another? Any setting that I could change on the ver 3 RC9 that would make it perform as the 2.9.48? (on the wireless links I would assume.
Jorge