I signed up to thank you for producing these test images and highlighting this problem. I noticed these text rending issues myself in Windows but couldn't understand why some text looked worse than others until I came across your post about the vertical position. This seems insane, but you're completely correct (somehow).Hi everyone, signed up here just now because this is by far the biggest and most active thread about this monitor that I can find. I'm assuming it's a symptom of it being a relatively niche size and price range but it's not been spoken about as much as I'd have hoped!
I've had mine for a month now and I enjoy using it in almost every way. I quickly noticed some weirdness surrounding text clarity though, and anyone could be forgiven for assuming it has something to do with the BGR layout and incorrect subpixel rendering. It's not that, unfortunately, and so far I've only found one or two other people that have noticed the issue. It involves pixels affecting those directly below them, it's most obvious when grey is on a full black or full white canvas but this is far from the only scenario where it happens if you know what to look for.
I made a quick and dirty test image to be viewed on the FV43U to prove the point - assuming the issue is universal, horizontal lines will be discoloured by those above them. The grey becomes lighter when below white and darker when below black. The text is small and aliased and is an extreme example but (at least for me) shows the issue up very well.
View attachment 379595
What's even more strange is the problem gets worse higher up the panel. Pull this image down to the bottom (center especially) and it goes away almost entirely. No amount of settings changes, port changes or device changes solve the issue. I tested it on my PS5, same thing. I'm also running the newest F04 beta firmware, that didn't change it.
Another glaring visual error is demonstrated by viewing the clock and phase test pattern at lagom.nl here: http://www.lagom.nl/lcd-test/clock_phase.php
If you view this in a window that is 50% horizontal width (or any size other than full, honestly), the test pattern ghosts across the rest of the screen. It's not one that comes up much in every day use but even scrolling up and down this thread on half the screen makes lines ghost across the other half, most obvious if using a dark theme in something.
I have reported all this to Gigabyte through their eSupport page but I'm still waiting for a further response past the boilerplate "Try a different port" reply.
If anyone else who owns this screen can prove that I'm not just going insane (or that I've got a dud) I'd really like to know. I've only ever found one or two others that have seen this prblem on the FV43U, one suggestion was that it could be a T-CON board firmware problem. I have no idea myself but I'm hoping it CAN be fixed in software but it feels like a panel issue.
Assuming it's universal, maybe more people getting on Gigabyte's back about this would help!
I'll be returning my FV43U, since this effect actively gives me a headache trying to read the blurry text and as this was my primary display, that's just unacceptable. Thanks again