Thinking about how we have reached the point where a 4K "native quality" output is coming from 1080p internal render resolution either via DLSS 2 Perf mode or looking forward to UE5's Temporal Super Resolution & (we assume) FidelityFX Super Resolution: https://blog.shivoa.net/2021/05/fewer-samples-per-pixel-per-frame.html
Already slightly concerned with the route AMD have chosen for upscaling & await head to heads between UE5's technique & FSR when they're both public. I hope I'm wrong but, as others have noted, the early information shows clear limitations (possibly putting this closer to UE4's upscaler for quality trade-offs). We're no longer in 2017 where any alternative to various checkerboarding techniques would be a major boon on PC.
Some good side-by-side for UE5 TSR vs native res TAA. You can definitely see softer output/detail loss vs native but given the internal res it feels like a generational upgrade over UE4 TAA upscaling. Visible ghosting in spots from both native TAA & TSR, which will make DLSS comparisons interesting, especially as DLSS often presents a sharper/more detailed final image than native res TAA implementations while around the rendering cost of this TSR.
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