Increase AP in gateway mode performance (disable qos maybe?)

[stephen_hall_60]

Does anyone have any ideas to improve performance on standalone APs in gateway mode?

I have seen the KBs that state you should not expect more than 100 - 200m speeds when ruk aps are in GW mode (even on highest end ruk APs !) ,  

does anyone have any ideas to maybe disable some qos or other packet processing to improve gateway performance (standalone fw)?

as an example:
we are seeing 70-100mbit TOPS on a 7372 with 104.x FW ,  however even when testing higher end hardware (ie r610 or r720), speeds were maxing out at 150-200m in gateway mode (even when using the 2nd Ethernet port, so no wifi).  (same APs in bridge mode, 400m +) 

(i read somewhere that on unleashed there is a "no qos" command, but i cant find similar on standalone)

thanks