Question Help me solve my 30Hz / interlace problem with Win10

[arredondo]

I upgraded to Win10 from Win7 earlier this year. For at least a month or so, several times a week Win10 switches the PC's output to my 1080P HDTV display form 60Hz progressive to 30Hz interlaced.

What makes it worse is when I go into advanced display settings to change it back (hitting "Apply"), nothing happens and the ugly flicker remains until I reset my entire rig.

Help, please!

 

[RLGL]

Need all hardware details

 

[arredondo]

Details of my setup are in my sig. I'll copy and paste it:

ASRock Extreme3 Gen3 mobo ''' Sapphire Nitro 390 @1140/1728 ''' Intel i5-2500K CPU @4.4 GHz
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SanDisk Ultra 512GB SSD ''' Samsung F3 Spinpoint 1TB ''' 16GB RAM @1600 ''' Antec EarthWatts 650W
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Sony 60" Bravia NX-720 ''' Yamaha RX-V667 receiver ''' Velodyne Front Row speakers ''' BIC H-100 sub