
I don't know such a CAM module with those features exists.
I don't 'think' if it's related with Samsung TV firmware your CAM firmware...
I don't understand your voltage problem also.
If voltage goes up 5.01, than your wifi resets or if it's goes bellow 5.01 than your wifi resets?
Does attaching 100mf cap helps little? Does it reboot less? If cap solve problem partially, than attaching ultra cap like 0.1F might solve it completely.