I'd like to avoid requiring 1:1 previews as they take several hours to create for some reason.
If you don't want to build the 1:1 previews, then the direct impact of this decision is slow scrolling in the Library Module. That's what previews do, they enable you to scroll faster in the Library Module.
What is wrong with building the previews overnight?
Some of the slowness is also due to the 4K monitor (which makes things worse in Develop Module)
I frequently need to edit the images quickly after I have been taking them. The ability to go through ~500 pictures from a shoot and find the 5 that I want to show a client while doing a few quick touch ups is what I am trying to accomplish. I guess what I am trying to figure out is does there exist a system that could provide quick scrolling and on-the-fly preview generation on a 4k monitor? Or is that just not technically possible yet.