4K tv input lag

[etye]

I recently bought a big 4k tv so I thought I'd try hooking it up to my PC via HDMI. Now for some games (Dishonored, Dark Souls III, Doom) there is almost no noticeable lag at 1080p. But for some other games there is a very noticeable lag. For MGSV on 1080p I'm getting bad lag even with V-sync off and low settings. But when I switch to 720p the lag disappears. For Shadow of Mordor, I'm getting bad lag no matter the resolution or the graphics settings. Any advice?

TV: Vizio D58U-D3

GPU: Radeon R9 290

 

[Jasjar]

Try turning the tv to gaming mode?

 

[etye]

I have it set to gaming "low latency" mode.

 

[atomicWAR]

yeah turn your set to Game mode. Also if that does not work label the input as PC. this also sometimes lowers input lag. also ensure all things like automotion/240hz refresh are off. they increase input lag A LOT.

 

[etye]

yeah turn your set to Game mode. Also if that does not work label the input as PC. this also sometimes lowers input lag. also ensure all things like automotion/240hz refresh atre off. they increase input lag A LOT.

Doesn't look like the tv has any refresh rate settings. The weird thing is that I'm only getting lag for specific games. Rocket league runs fine, rise of the tomb raider has lag.

 

[etye]

So The Witcher 3 also has bad input lag but it disappears when I set it the game to 720p. Could it be my GPU, or is that unrelated to lag?

 

[John_561]

This is kind of a late answer but I thought I'd add since I have the same TV and have been using it as a monitor. I run an HDMI 2.0 (active) cable from the HDMI out of my GPU and (since I got a Rift) a displayport to hdmi adapter then in. I use the number 5 (uhd/gaming) suggested HDMI port on the TV. It's the top-most one right under the USB plug. I don't use ANY processing via the TV. Like gaming mode and everything else off. I also customize the gaming selector on the remote for more gamma ingame. I don't really notice any lag ever in anything unless processing is on. This includes FPS's and my gold standard: hitting a perfect skill check in DbD where ANY input lag is extremely noticeable. Hope this helps. I actually researched low lag UHDTVs o'plenty before I got this one I've had it for about a year and a half and no problems and it's on 24 hours a day everyday pretty much.