So something like this would be able to check the calibration for each unit, this would probably make the signal better and reduce interference.
This one allows simultaneous 2T2R = MIMO:
I haven't figured out the exact process but a testing would be to check the frequency and SNR with the UB2X0 and then modify the firmware on the WiTi and re-check it until we get the optimal parameters for the radios.
This will also help us find out if its hardware or software issue and what are next steps for the next revision.
I've contacted a few ODMs and if enough people are interested we could do our own "WiTi 2" because honestly I'm tired of waiting and I know quite a few folks who want a high performance, stable router. I would ask stas2z help with the firmware if he has time