current state of the firmware for 7e, 2x3 and DSMX

My Devo 7e has been on the shelf for a wile now because i was getting some random signal loss and lockouts with DSMX/DSM2. My rang was good and some days i could fly all day out passed 300m but then sometimes i would get lockout at 20m.
I've been using nightly builds since the beginning because of the 2x3 switches and some protocols (KN for V977).

My question is, are there ant firmware that is known to be reliable with DSMX/DSM2 and allow me the 2x3 switches. I can forgo the KN protocol.

67f35d0 is what I've been using for a while already with no issues on both DSM2 and DSMX.

I'm using the 4/14 nightly, # 67b36f4 and it too works great. I was having some [unrelated] HW issues causing DSMX issues (they wern't DSMX specific, it was a HW issue with the factory radio module) but after correcting that I've done a couple range tests, one at 10mW (you can see here ) out to 300meters and another at full power I made it out to 1100meters before running out of room to walk any further, still with a rock steady signal. I've also been flying a few different multirotors and controlling a tracked vehicle (it's on DSM2) with no loss of signal (I have my failsafe set to kick in after only .5 sec of signal loss so I would instantly know if I had even the slightest loss of signal)

Using e1a3b14 (16th March) and have the 2x3 switches on my 7E and it seems fine on the only DSM2 model I use it with
(MCPX so I don't let it go too far away from me as its such a wee model)

I tend to fly with power set to 3mw and not had any range issues ...yet
Regards
Rob