This monitor has decent text clarity. Windows ClearType (top photo) makes diagonal lines look better, like on the R and N. It uses a BGR subpixel layout, which causes text to look worse in programs that aren't designed to render text in the BGR subpixel layout. That said, the difference between this BGR layout and text from RGB panels on most other monitors isn't very noticeable for some at native scaling unless you're actively looking for it.
If text looks blurry due to the BGR subpixel layout, you can mount the screen upside down, which gives it a proper RGB layout. However, this workaround seems to increase input lag at the maximum refresh rate to 15.1 ms from the standard 3.2 ms, and G-SYNC doesn't work properly.
A second version of this monitor, the Gigabyte M27Q (rev. 2.0), uses an RGB subpixel layout, so you won't have any of the same text clarity issues with that monitor.
Here are some photos taken at 100% and 125% scaling, with ClearType on and off, as well as with the screen turned upside down:
Here are some photos of text from a MacBook running on Big Sur. It appears that macOS doesn't use subpixel dimming in any of the apps we tested, which includes Safari, TextEdit, Notes, Finder, and Chrome, so the BGR subpixel layout doesn't cause blurry text.
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