[anthomtb]

Nope, not at all.

Maybe it is one of those things where, once you switch to 4K, you can’t got back.

[acdha]

Quite possibly. I do this multiple times a week and it’s quite noticeable but that’s definitely after training my baseline expectations.

I have found it seems to be better for eye strain but that’s a single anecdote, not science.

[E39M5S62]

I was on ~100dpi monitors for years. I just picked up a 26" 4k Dell for a steal - it's noticably more crisp than my 1440p screens. I'm not getting rid of my 1200p and 1440p screens on my workstation, but ... 4k is nice.