r190 set to auto does not move channels to optimum/least amount of noise. We have seen this in to many examples for it to be a fluke. Seems like a solid bug needs to be addressed.
The optimum channel is selected when the router boots. If the RF environment changes the channel won’t automatically adjust accordingly.
The best solution is just to reboot the router to force a channel change.
To be honest, I dont think that works either. Usually, we have to run wifi analyzer in cnM and see what the router is hearing and then go into the gui and change it manually. Every time.
In my home, I am using the R190V(4.4.2-R2) and It selects the best channel whenever reboot the router.
Can you use the Metageek tool to find the best noise-free channel and check auto channel behaviour of R190V?