? someone running 802.11n(ac) MIMO 1x1 in nstreme DUAL

drinking some hard alchocol and thinking, what is the best choice to achieve best result

with same dual chain antenna!
MIMO 2x2 with 1 card in n or ac

or MIMO 1x1 with 2 separated cards in different frequencies?
last one shall give better throughput..

Is there someone using this setup? please share opinion/results

At the present moment it works best 2x2 N + Nster 40Mhz. With clean channels.
http://kazuko.pl/?p=testyRB911G5HPacDNBplusmANT30

AC is unable to operate stably.