Lag free photo scrolling *sigh*

[u/Legonerdburger]

Is it just me or it's impossible to achieve with the current LR software?

I purchased a maxed out MBP, built every preview, using off the hard drive etc. and still can't achieve lagless scrolling between photos. Going from one photo to the next sequentially is lag free but if I try to scroll 5+ photos up it takes a second or so to generate the sharp image

Any other tips on how this can be done?

I miss the Canon DPP 3.x days when I could just cull on the computer and not have any lag whatsoever :'(

*UPDATE*:

Sorry, I think I fixed the problem. When building 1:1 previews, it fixes the issue, I can now literally hold down the arrow keys and the photos are instantaneous even when scrolling at that faster than eye speed - the trick was to build 1:1 previews, I was on "standard previews". I will leave this post up if it helps others.

Specs to achieve lagless scrolling:

MBP (maxed)
1:1 previews and smart previews (though not sure if the latter is necessary)
working of hard drive (internal)
20gb cache setting (dunno why I put that but I read it helps online)

[u/Exotic-Grape8743]

Smart are never necessary. They are only used when your originals are not available. For example if they are on an external drive.

Also, you shouldn't need 1:1 previews if your standard previews are big enough. This is a setting in catalog settings->previews. It should be set to auto which will create standard previews that are big enough for the main display. For a MBP this is typically 3456 pixels. Most times when scrolling is slow it is because the standard previews are not big enough and it has to re-render them constantly.