Lag with new monitor

[Ray Gapist]

So I was playing games with ultra, 1080p with the screen on my laptop and was frequently getting 80+ fps while playing games. Recently I bought a new desk, with my laptop hdmi-ing to my new monitor. For some reason, this has been causing problems. I keep getting noticeable lag, even my fps counter in my top right corner says otherwise. My new monitor is 75 hz, so i don't see a reason for why this is happening. Then, to reduce lag, i put my games in 1600 x 900 resolution, and it is completely fine (100+ fps and looks good on monitor). I have been playing through it but I am getting tired of playing my games at a low resolution. Anyone?

[Cathulhu]

What resolution does your new monitor have?

[_I_]

if they are different res, hit winkey+p then select only the external display

[Ray Gapist]

The monitor is 1080p

The laptop screen is 4K

[rotNdude]

Post the make and model of the monitor you're using.

[Ray Gapist]

Acer KG271 bmiix 27" Full HD (1920 x 1080) TN Monitor with AMD FREESYNC Technology (2 x HDMI & VGA Port)

And the lag is playable in 1080p, just bothersome

[upcoast]

Originally posted by zacharyrobert21:

Acer KG271 bmiix 27" Full HD (1920 x 1080) TN Monitor with AMD FREESYNC Technology (2 x HDMI & VGA Port)

That's the monitor ^, post the specs on the laptop ie make model/cpu/gpu/ram???

Ps, turn on steams FPS counter in steam options so you see what your fps is when it stutters.

https://www.youtube.com/watch?v=vRPkcxwXOWg

[Ray Gapist]

Originally posted by upcoast:

Originally posted by zacharyrobert21:

Acer KG271 bmiix 27" Full HD (1920 x 1080) TN Monitor with AMD FREESYNC Technology (2 x HDMI & VGA Port)

That's the monitor ^, post the specs on the laptop ie make model/cpu/gpu/ram???

Ps, turn on steams FPS counter in steam options so you see what your fps is when it stutters.

https://www.youtube.com/watch?v=vRPkcxwXOWg

Can’t find exact specs but here’s what I know..
Alienware 15
Intel Core i7
GTX 970M
16 GB RAM
128 SSD
1 TB Hard Drive

[kofi]

Originally posted by zacharyrobert21:

So I was playing games with ultra, 1080p with the screen on my laptop and was frequently getting 80+ fps while playing games. Recently I bought a new desk, with my laptop hdmi-ing to my new monitor. For some reason, this has been causing problems. I keep getting noticeable lag, even my fps counter in my top right corner says otherwise. My new monitor is 75 hz, so i don't see a reason for why this is happening. Then, to reduce lag, i put my games in 1600 x 900 resolution, and it is completely fine (100+ fps and looks good on monitor). I have been playing through it but I am getting tired of playing my games at a low resolution. Anyone?

In my theory, could be just that the laptop screen is still the maim screen and is locked to 60hz, so Your monitor is too? I dunno...

[Ray Gapist]

Originally posted by _I_:

if they are different res, hit winkey+p then select only the external display

thank you this worked but i shouldve known lol