Is this common or is there something wrong with my Deco Units? 

I just bought 3 X55 units about 2 months ago, upgrading from M3s.

If I plug into the ethernet port on the Base and ping the internal Gateway IP of system I get either <1ms or 1ms of latnecy.  If I connect to wireless fromt he same laptop and verify I'm conencted to the Base, I get anywhere from 5ms to 15ms ping response tothe same Gateway IP.

I would epect <1ms from anywhere in the house.

I was having issues with something for work, and I know it's not an issue on my side, but the support person kept asking why I was getting such high latency from my home system and kept suggesting something is wrong.

When I do speed tests I still get ~250Mbps, which is what I expect over wireless, but the latency over wireless versus wired is a little disconcerting.

I'm not sure if the old units did this as well.

Anything I can look at or adjust?  I tried shutting off QOS or making sure with QOS on that my laptop was high priority, but neither made a difference.

Thanks.