Duets driving me crazy

I've used two duets (and often a software player on of my pc's) for years now without too much problems. But somewhere after these changes:

1. i now have two wireless access points in the network, i would like the first duet to connect to the first and the second to the second network (is that possible?). The only way i could have the controller 'see' the duets was when they both connected to the same wireless access point.

2. i've updated the software whenever the system (LMS on a Synonogy NAS) offered the possibility

very very frequently LMS can't connect to my duets. I often have to go through the following actions (and i mean several times a day): reset the duets, restart LMS and then finally after a while i can play music again. Sometimes i can play for just 5 seconds sometimes for several hours.

Wireless connections are OK for all other devices. I now still hear the MusicPal system (cheap but it runs and runs...) playing while i had at least 5 interruptions on the LMS/duets.

Anyone any clue? It seems that connection problems are occuring very often with duets. Are they still worth the trouble?

Regards
Rein van den Boomgaard