So I have installed the ANNO 1800 and here are my impressions (just from quickly looking around and comparing different settings, not an extensive testing like the YT channels did):
1080ti 1440p DX12 8xAA Ultra settings
(Game needs to restart after changing the FSR setting... it's annoying)
FSR Off - Map zoomed out to the max - 48FPS to 55FPS - you can see foliage quite well, you are loosing a lot of detail from zooming out that much but still you see a defined edges to mountains and the trees when they are overlapping.
FSR Off - Map zoomed in to the max - 60FPS to 70FPS - everything is clear and sharp and crisp
FSR Ultra - Map zoomed out to the max - 67FPS to 78FPS - the grass is not as clear as when FSR was OFF but overall the foliage still looks good. Everything else seems as before unless you're pixel hunting, honestly, the FPS increase is much, much more noticeable and the image quality is just a tiny bit softer but barely noticeable unless you're really looking for it.
FSR Ultra - Map zoomed in to the max - 82 to 94FPS - I honestly couldn't tell a difference vs FSR Off when zoomed in besides the FPS increase.
FSR Quality - Map zoomed out to the max - 81FPS to 90FPS - the small details like fences, railings, thin poles, etc... are starting to lose detail. Still not really that big of a deal to be honest since you really have to specifically look for it. But yes, it's there if you look for it and you can find it fairly quickly. Foliage became more soft, especially the grass. Now when zoomed out you can't really see the individual grass strands but the rest of the foliage like trees for example still look good.
FSR Quality - Map zoomed in to the max - 95FPS to 108FPS - when fields are moving in the wind you can see a bit of shimmering on the edges of the grass but it's not that kind of annoying shimmering that you can pick up with your peripheral vision when not looking at it, you only see it when directly looking at it so it's all right imo. Small details on textures also lost the quality, they are more pixelated as if the textures were lower res but overall, they still look well enough.
FSR Balanced (not tested)
FSR Performance - map zoomed out to the max - 110FPS to 120FPS - you can instantly see the visual quality was degraded by quite a bit, but to be honest, it's not as bad as I expected. When zoomed out you can't really pick out the small details at all and there is definitely way more shimmering especially around small moving objects.
FSR Performance - map zoomed in to the max - 130FPS to 140FPS - as before, small moving objects shimmer a bit, but not as much as when zoomed out, you can pick out small details in the textures at all and if you can, they are drawn incorrectly vs the original. It's still usable but if you have to go this low with FSR I would advise you to lower the settings first. If you are already at low settings, this is still usable though, just avoid it if you can.
FSR Off but 1080p upscaled to 1440p - map zoomed out to the max - 51FPS to 63FPS - this instantly looks worse than FSR Quality when zoomed out. It's blurry and pixelated, it honestly look almost like FSR Performance, I don't recommend this at all.
FSR Off - map zoomed in to the max - 69FPS to 77FPS - still looks worse than FSR Quality but way better than FSR Performance. The upscaling from 1080p to 1440p still looks blurry and pixelated at the same time but you can pick out the details in objects just fine. I don't really like it though, FSR is definitely better.
FSR Ultra but I reduced AA from x8 to x4 and it resulted in around +10FPS and I can't tell any difference at all so win?
Wish I had more games to test. So far I'm impressed, at least with this one game I tried. It definitely makes no sense to not use FSR Ultra at the very least. The difference in visual quality is insignificant vs the performance gained and it's also really difficult to even notice it if you're not looking for it.
I truly believe the Era of Introverts is around the corner.
We've already seen a MASSIVE increase in the economic (and more recently, social/cultural) value of introverts and I would not be surprised if at some point in the coming years, introverts become the majority. It'll be an exciting time to live in.