This version is compatible with Fullscreen Exclusive:
SpecialK64.7z (7.5 MB)
[API.Hook]
LastKnown=64
d3d11=false
d3d12=true
d3d9=false
d3d9ex=false
OpenGL=false
Vulkan=false
[Render.FrameRate]
TargetFPS=50.0
SleeplessRenderThread=true
SleeplessWindowThread=true
PreRenderLimit=3
BackBufferCount=2
PresentationInterval=-1
LimiterTolerance=1.5
[SpecialK.System]
EnableCEGUI=false
[Render.DXGI]
UseFlipDiscard=true
AllowTearingInDWM=true
SwapChainWait=66
[Window.System]
Borderless=true
Center=true
RenderInBackground=true
Fullscreen=true
Same story as before, set TargetFPS to your refresh rate (ideally). No resolution overrides are needed any longer and you can switch between fullscreen / borderless in-game. The game tends to not make the initial transition into Fullscreen Exclusive unless you alt-tab in/out. It behaves that way with or without SK.