Is there a way to turn off the 4K upscale mode in LG 4K TVs? Everything I play from Netflix thru my Hopper 3 says it is 4K when I check it with the LG magic remote. I have a RF modulator connected to my H3 for all my other home TVs to view without a Joey. The other TVs do not work when something is being broadcast in 4K thru the RF modulator. HD and SD works OK. Thanks for any help.