Knicksman20
Superstar
I got a Vizio M-60 4k and I just don't see the difference. Should I be using the 60fps HDMI slot ?
Did a quick search for your model. Try these & see if it makes a difference:
TweakTV | Vizio M601i-A2 - TweakTV
Also this forum is a bunch of fanatics but their calibrations for me have been solid:
Official 2015 Vizio 4K UHD M Series Thread - Page 218 - AVS Forum | Home Theater Discussions And Reviews