Ya, someone mentioned that there maybe a ath10k something and QCA something packages that has to be installed. I asked for more details and i think someone responded however I now can't see the response as that forum is down currently. Argh.
I do think the 5500 performs better with WRT on it. For SQM, I didn't do any major testing as that needs more testing and work in configuration. I did some speed tests however I don't think it's working right. Also for SQM to work well, it needs a bandwidth load on the LAN side going out to the WAN side to be of any benefit so for my needs, It's not beneficial as my primary needs are for gaming and since I'm the only one gaming at night with nothing else going on, I can't make use of it.
However I am hoping to get details on setting it up for other users so we can at least get some extra or new life out of the 5500.
Soon as I get on the forum there, I'll see what the deal is about the 5Ghz radio. If we can get that going then the rest will be good I hope.