I have a 2020 Asus Vivobook with i5 CPU, 8 GB RAM, 100GB M2 and 500 GB SSD. It runs so smoothly, boots in seconds, and the desktop windows have curved corners.
Same on my Acer Aspire C25, same specs. And my 8 year old home-made tower PC, i7 CPU, 16 GB RAM, 120 GB M2, 1TB Samsung 960 SSD.
You will never know improvements in operation or visuals using W11 until you install it. You can always go back if you don't like it.