Ok, so the 6p and mix2s aren't daydream ready. That's not good enough!
Ah right yes, I must have mis remembered then, guess it was actually my current phone of note 8 I tried with daydream which I use now with newest gearvr. I used to have S7 edge and original gearvr which was also good.
I use a moto z force, performance is great and is very immersion.
S7 isnt a native Daydream phone so you must have rooted it or done something to get it to work. That "may" have affected your experience I have a GearVR and love it. Also have a Daydream and am in the process of trying to get my S7 edge working with it
Err, Pixels are.