please can You think about it just a few minutes? 6.41rc61 still the same...!
2 years old bug with TX Rate on all smartphones with android. TX Rate is always only 54Mbps but RX Rate is 72.2Mbps-20MHz/1S/SGI.
There is a "backdoor" (actually well known feature not a backdoor). Use superchannel as frequency mode and make sure that your radio is set to the channel allowed in your country.or they will be left some backdoor possibillity to go without DFS