Windows desktop switching resolution automatically when using TV as a monitor...

[supo]

Hi all I've just purchased a Samsung TV KS8000 (EU) and I have a random issue related to using the TV as a PC monitor. I'm running a Windows 7 os and GTX 1070 gpu, my PC is directly hooked to the HDMI 2 on the One connect box. I like to run my desktop resolution at 1080p because 4k makes everything too small. Anyway my issue is that sometimes randomly when I switch sources on the TV and back to the HDMI 2 port (where the PC is connected) my desktop resolution automatically switches to 4k and I have to change the resolution back to 1080p from the nvidia control panel every time.

How can I stop this from happening? I want my desktop to be on 1080p all the time on this TV not 4k or any other resolution.

Any help would be appreciated.

 

[Herc08]

It's because that is the signal it is receiving. If it is pushing out a 4K signal, then it will switch to compensate.

 

[rgd1101]

MERGED QUESTION
Question from supo : "Windows desktop switching resolution automatically when using TV as a monitor..."

Hi all I've just purchased a Samsung TV KS8000 (EU) and I have a random issue related to using the TV as a PC monitor. I'm running a Windows 7 os and GTX 1070 gpu, my PC is directly hooked to the HDMI 2 on the One connect box. I like to run my desktop resolution at 1080p because 4k makes everything too small. Anyway my issue is that sometimes randomly when I switch sources on the TV and back to the HDMI 2 port (where the PC is connected) my desktop resolution automatically switches to 4k and I have to change the resolution back to 1080p from the nvidia control panel every time.

How can I stop this from happening? I want my desktop to be on 1080p all the time on this TV not 4k or any other resolution.

Any help would be appreciated.