1080 ti and 1080 two monitors 1 PC.
Posted: Mon Jul 16, 2018 3:24 am
Asking how many problems I should have with this setup running WoW and IsBoxer. Is it a bad idea?
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Multiple GPUs: With any version of Windows, allowing a game window to move from one monitor to another that is powered by a different GPU will cause a significant performance hit.
These are not Inner Space or ISBoxer limitations; This is documented by Microsoft here under Best Practices for Multi-Monitor Displays
About the game launching process on multiple monitors
When your game first launches, regardless of what GPU ISBoxer has selected for the game, the game window is still most likely to appear on the primary display (by design of the game you are playing; this is just where the game puts the window initially and is unrelated to your Window Layout!) before ISBoxer moves it into your Window Layout. During this time, a performance hit described in the "Powering multiple monitors" section may apply, and then subside when the window is moved to the proper monitor.
Some (few) games have a setting that affects where the window is initially placed -- although ISBoxer will still enforce the correct GPU regardless of this setting. For example, World of Warcraft has a monitor selection setting in its video options that will cause it to initially appear on a different monitor than the primary.
How to get high performance cross-monitor Swapping
There are exactly two ways that allow you to move a window from one monitor to another without losing performance:
1. Use ONE video card instead of two (Windows Vista or later only!)
How to split the load between multiple GPUs
In order to split the load between multiple GPUs yourself (as opposed to using SLI or Crossfire):
1. Avoid using Cross-monitor Swapping (note that when swapping occurs, the same GPU handles the rendering as before, but incurs a performance hit to render on the other screen)
2. Pick a Window Layout where the Home Region for each Window is on the GPU you would like to power it. That GPU will power the window for its lifetime, regardless of whether the window moves to the other screen via Cross-monitor Swapping.