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Borderless *should* be comparable to fullscreen, but it's currently bugged
CS:GO

Borderless *should* be comparable to fullscreen, but it’s currently bugged

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…at least at native resolution. Let me explain.

Here's a screenshot taken at 1080p, on a 1440p monitor.

The overlay in the top left is Nvidia FrameView, and the things to note are:
– PCL (system latency) of around 9ms

  • W (windowed) and I (independent flip model) icons on the bottom row. This is what it SHOULD look like, when borderless is working properly.

Here's another one taken at 1440p. See the difference?

An easy way to test this yourself is to use the sys_info command in the console. Here's an example for both.
– If the first line after "Vid:" says "Desktop-friendly Fullscreen", borderless is working as it should.

  • If it says "Borderless Window" instead, you're getting up to 15ms of added latency for no reason.

Now, the weird part. This only happens at the monitor's native resolution. Anything else, stretched or just lower than your desktop res, and it's fine.

This can be fixed by manually changing "setting.coop_fullscreen" to "1" in cs2_video.txt