Dual Monitor Lag

Started 6 Feb 2019
by tumenter
in Support Center
So it seems this game is giving me FPS Stutters when using two monitors forcing me to disable the second one. Is there a fix to this without disabling the second monitor?
Thu 7 Feb 2019 9:28 AM by De Kus
You might want to give more details on that one. I am not having issues with running 2 monitors.

Which GFX brand and generation do you use?
Which driver version do you use?
Which fullscreen mode do you use?
Do you have issues with the 2nd monitor in other games/applications?
Is the stutter measureable, or is the game running good FPS but just stuttering once in a while?
Thu 7 Feb 2019 2:32 PM by Mac
I use 2 monitors and have zero issues with Phoenix stuttering.
Thu 7 Feb 2019 8:36 PM by boom-mug
I run 3 and have no problems.

Do fullscreen and windowed full screen behave the same way?
Fri 8 Feb 2019 7:12 AM by Sepplord
i am playing in borderless windowmode on one monitor and have a second one to the left.
SOMETIMES i get really heavy stutters and FPS drops down to 20

It usually fxes though if i go completely to desktop on all screens and then tab into the game again (if i just click the game in the system bar the window comes up and i can control my character but the stutters stay)


Not sure if this can help you, but maybe the problems are related
Fri 8 Feb 2019 7:17 PM by tumenter
De Kus wrote:
Thu 7 Feb 2019 9:28 AM
You might want to give more details on that one. I am not having issues with running 2 monitors.

Which GFX brand and generation do you use?
Which driver version do you use?
Which fullscreen mode do you use?
Do you have issues with the 2nd monitor in other games/applications?
Is the stutter measureable, or is the game running good FPS but just stuttering once in a while?

i Have a Nvidia 1070 GTX Gigabyte
Using the current official 418.81 i also tried this with the previous driver and still same issue.
I have tried both full and windowed screen.
I wouldnt say its an FPS issue, it just randomly does half a second mini freezes. Disabling my second monitor is the only fix i found so far.
Wed 13 Feb 2019 6:38 PM by De Kus
I have the same GFX chip, but still using the 417.35, since I was too lazy to update. So neither the driver nor the card itself should be an issue.

It might sound stupid, but have you tried different/newer sound drivers?
Is the game running on HDD or SSD?
Thu 14 Feb 2019 3:08 PM by Ashok
boom-mug wrote:
Thu 7 Feb 2019 8:36 PM
Do fullscreen and windowed full screen behave the same way?

No.

Fullscreen (aka Direct3D / D3D) disables the desktop rendering for the given screen and limits interaction capabilities to the D3D application. That's the reason why it takes a second when swapping from the D3D application to the desktop.
On weaker systems D3D mode usable boosts the FPS a bit, depending on its overall specs.

Windowed mode (including borderless window aka fullscreen window) keeps rendering the full desktop to allow instant application swapping for pseudo multitasking.

To get some insights from which direction the FPS drops come I suggest running the "resource monitor" from Windows on the second screen (press Windows key + R => enter: resmon).
On first FPS drop, leave the CPU tab open to see of a specific process is causing a high load; sort descending by CPU.
On second drop, check the HDD tab to see if a process is causing an unexpected high spike on disk usage (sort decending by total bytes read/write).
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