Upgraded To A 3080 And Samsung Q80T Doesn't Switch To 1440p Now

[nick name]

I just scored me a 15 month old EVGA 3080 FTW3 Hybrid for a delightful price.  Everything seems great, but my Samsung Q80T no longer switches to 1440p when I run games like it used to with my 1070ti.  It stays in 4k.  Now I'm not sure it's a bad thing as the games report running in 1440p, but the different behavior bothers me a bit.  The only game that still does switch to 1440p is CS:GO.  Another thing different about CS:GO is that it never automatically activates Game Mode.

 

So while the TV stays in 4k the games do appear to run in 1440p so I guess it's better now?  It just drives me nuts not knowing why the behavior is different now.

 

I've looked at things like scaling being done on the GPU vs the Display and Full Screen and Aspect Ratio.  G-Sync on and off.  Turning Game Mode off on the TV.  Setting the resolution in Nvidia Control Panel to 4k (Native) 60Hz (I don't know why it says 60Hz is native when it's a 120Hz display) and PC 3840x2160 120Hz.

 

I am using HDMI as I was with the 1070ti.  It's a 4k 120Hz capable cable.  

 

Anyone have an idea?

[merco]

From rtings: 

LED Clear Motion reduces the frequency further to 60Hz.

I'm not sure about the rest, maybe try a display cable anyways, there sometimes can be weird behavior with different cable types. 

[nick name]

10 minutes ago, merco said:

From rtings: 

LED Clear Motion reduces the frequency further to 60Hz.

I'm not sure about the rest, maybe try a display cable anyways, there sometimes can be weird behavior with different cable types. 

It stays in 4k 120Hz.  

[Hairless Monkey Boy]

The 1070 has HDMI 2.0 while the 3080 has HDMI 2.1. That might do something.

 

There is also a setting on my Samsung TV called "Input Signal Plus" that might have some effect if you have it too.

[Bad5ector]

Change your desktop res to 1440. Check your Advanced Display Settings. Do your active signal resolution and desktop resolution seem to be different?

 

I seem to recall this bug before. If it doesn't end up being something like a scaling option on your TV, it might be time for a DDU and reinstall the drivers to see if that helps.

[nick name]

6 hours ago, Bad5ector said:

Change your desktop res to 1440. Check your Advanced Display Settings. Do your active signal resolution and desktop resolution seem to be different?

 

I seem to recall this bug before. If it doesn't end up being something like a scaling option on your TV, it might be time for a DDU and reinstall the drivers to see if that helps.

I will check those. 

[nick name]

6 hours ago, Bad5ector said:

Change your desktop res to 1440. Check your Advanced Display Settings. Do your active signal resolution and desktop resolution seem to be different?

 

I seem to recall this bug before. If it doesn't end up being something like a scaling option on your TV, it might be time for a DDU and reinstall the drivers to see if that helps.

Yes, they are different.  Active stays 4k while Desktop Display goes to 1440p.

[nick name]

From what I've been reading this may be a Windows bug and I may not have noticed that the 1070ti was doing the same thing.  And I'm too lazy to plug the 1070ti back in to check.  Maybe when my new PSU comes in I'll check the 1070ti.

[Bad5ector]

1 hour ago, nick name said:

From what I've been reading this may be a Windows bug

I want to say I had the same thing with my HTPC, that's why I was thought of it. Wish I could remember what I did to fix... in all honesty it was probably just a wipe / reload, cause I was too lazy (speaking of) to bother and figure it out lol.

[nick name]

4 hours ago, Bad5ector said:

I want to say I had the same thing with my HTPC, that's why I was thought of it. Wish I could remember what I did to fix... in all honesty it was probably just a wipe / reload, cause I was too lazy (speaking of) to bother and figure it out lol.

Well I did a DDU but no joy.  One thing is I remember adding 1440p 120Hz to Custom Resolutions, but now I can't because it's listed under PC in Nvidia Control Panel so perhaps that's why it was able to switch to that resolution when I started games?  Though the fact CS:GO will trigger the switch (but with no Game Mode) is curious.  Other games will switch the TV to Game Mode, but not switch the TV's resolution.  Now I think it was the custom resolution I was able to add before that I can't now because it exists in the PC resolution list.  

[nick name]

This is sooooooo frustrating.