How to run the game in fullscreen without slowdown?

[Bero]

Does anyone know?
My rig: https://pcpartpicker.com/list/Ghq8Qq

[Jezze]

You could play in Window mode and use the tool Borderless Gaming to scale it to fullscreen.

[Bero]

OK I'll try that

[BONKERS]

Run your desktop at 1080p first then run the game.

[Bero]

Originally posted by BONKERS:

Run your desktop at 1080p first then run the game.

I did that but the problem persists.

[Bero]

So the problem is not 4K it seems.

[Nethrec]

I get the slow down issue on my TV via hdmi (running at 1080P). I don't have the same issue with my 1080P monitor running via DVI. The bug might be related to HDMI connections.

[Bero]

I have a PC connected to AV receiver and AV receiver to TV. Think I tried running 1080p instead of 4K but that didn't solve anything. My brother has 1080p monitor with VGA connector and game runs normally.

[BONKERS]

Originally posted by Fausterion:

I get the slow down issue on my TV via hdmi (running at 1080P). I don't have the same issue with my 1080P monitor running via DVI. The bug might be related to HDMI connections.

Try creating an EDID override with Custom Resolution Utility for your TV.
Delete the extension blocks and data for everything but Audio support (If you need it. If not just delete all extension blocks). Save and reset your GPU driver with the included reset64.exe.
Check your GPU control panel, the PC should now think your TV is just either a standard DVI or HDMI monitor and will disable all "TV resolutions" and TV based refresh rates.
It's possible the game is launching into a TV mode (Because EDIDs and GPU mfgs are stupid to even bother detecting TV timings when they just cause massive problems for PC use)

[Jezze]

Originally posted by Bero:

OK I'll try that

Have you tried the tool Borderless Gaming, yet?

I also had a slowdown problem on my 4K TV (3840x2160) in full screen mode, which also didn't utilized the whole screen, but had a rather large black border. Running the game in windowed mode extended to full screen by Borderless Gaming worked flawless; without any slowdown and I was able to get rid of the black border as well.

Oh, and in advanced display settings of Windows, ensure that your TV is running at 60Hz. Sometimes it's automatically set to 30Hz when changing resolution.

[limelight1210]

I have the same problem too. I use a TV and it runs half speed.

Solution was I went into Nvidia CP and disabled vsync for this game. Then it ran fine in full screen, but for some reason it still defaults to 4k resolution in chopped 4:3 and widescreen bars on top and bottom even though my desktop is 1080p. Gonna try borderless widescreen instead