Add "Disable Fullscreen optimizations", closes #209

Author: Disassembler0

Default.preset

@@ -175,6 +175,7 @@ UninstallMsftBloat              # InstallMsftBloat
 UninstallThirdPartyBloat        # InstallThirdPartyBloat
 # UninstallWindowsStore         # InstallWindowsStore
 DisableXboxFeatures             # EnableXboxFeatures
+# DisableFullscreenOptims       # EnableFullscreenOptims
 DisableAdobeFlash               # EnableAdobeFlash
 DisableEdgePreload              # EnableEdgePreload
 DisableEdgeShortcutCreation     # EnableEdgeShortcutCreation

Win10.psm1

@@ -2904,6 +2904,24 @@ Function EnableXboxFeatures {
 	Remove-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\GameDVR" -Name "AllowGameDVR" -ErrorAction SilentlyContinue
 }
 
+# Disable Fullscreen optimizations
+Function DisableFullscreenOptims {
+	Write-Output "Disabling Fullscreen optimizations..."
+	Set-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_DXGIHonorFSEWindowsCompatible" -Type DWord -Value 1
+	Set-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_FSEBehavior" -Type DWord -Value 2
+	Set-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_FSEBehaviorMode" -Type DWord -Value 2
+	Set-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_HonorUserFSEBehaviorMode" -Type DWord -Value 1
+}
+
+# Enable Fullscreen optimizations
+Function EnableFullscreenOptims {
+	Write-Output "Enabling Fullscreen optimizations..."
+	Set-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_DXGIHonorFSEWindowsCompatible" -Type DWord -Value 0
+	Remove-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_FSEBehavior" -ErrorAction SilentlyContinue
+	Set-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_FSEBehaviorMode" -Type DWord -Value 0
+	Set-ItemProperty -Path "HKCU:\System\GameConfigStore" -Name "GameDVR_HonorUserFSEBehaviorMode" -Type DWord -Value 0
+}
+
 # Disable built-in Adobe Flash in IE and Edge
 Function DisableAdobeFlash {
 	Write-Output "Disabling built-in Adobe Flash in IE and Edge..."