I can confirm, that with kernel 4.4.196-f90a52a6230ecb072f657fce5aebd444-0
, the crashes are gone.
BTW, it was crashing consistently on my both Turrises 1.x – all Omnias are already on TOS4. The only reason I noticed it only on one of them was that the other one has been upgraded with second Wi-Fi card and the original card is used only in 2.4 GHz band, which my devices generally don’t use. When I tried to connect to 2.4 GHz SSID, the router crashed in a very similar way.