This is a six core CPU and LR seems to have issues with more than 4 cores.
There are ways to limit LR to use only 4 cores. I don't remember the exact procedure. This has been discussed here in the forum and a search should return some results pretty quick.
Tell us the exact actions in Lightroom that are slow. Please be very specific.
Tell us the exact version NUMBER of your Lightroom.
There has been much discussion about how Lightroom runs best on 4-core CPUs, and your CPU is a 6 core CPU. There has also been some advice on how to force LR to use 4 cores, and that speeds Lightroom up for some people, you will have to search the forums to find out how to do that, I don't really remember.
Lightroom version: 6.10 [ 1111918 ]
There are couple of things where it's slow. I may be pixel peeping / checking certain areas of the image in develop or library module, with the magnifying glass / zoom tool. The image may looks pixelated in the zoomed area for a while before it loads in full resolution. Other use where it's slow is when I'm going "next next next" picture in library mode, trying to flag/rate pictures for "keep/deletion", it takes a while to load the new image in full resolution. Now you could argue that this is probably because I'm only making "minimal" previews for my images in the import process, but I've seen other software go through these same raw files with much more haste, loading instantaneously. I even ran across an article suggesting a third party program for "this part of the workflow" (culling), because it can load images much faster. These programs don't create previews like lightroom does, so I doubt my minimal preview preset is the issue.
I tried creating a shortcut to launch lightroom in 4-core affinity mode (as suggested in other thread Re: Terrible performance in LR - Fantastic in PP. What gives?! ) , but that didn't seem to affect my performance.
Now you could argue that this is probably because I'm only making "minimal" previews for my images in the import process, but I've seen other software go through these same raw files with much more haste, loading instantaneously
Not only will I argue this, but what other programs do is irrelevant because Lightroom relies on previews that have been built. If you have built minimal previews, then Lightroom has to generate (which takes time) the full sized previews.
What sort of previews does this program require? I created standard previews for some new images, and it's still far far too slow when browsing to next images, and it starts "loading" for 1-2 seconds when zooming somewhere. I don't understand why lightroom requires previews to browse through images whilst some other program doesn't, and are also faster.
Most other programs show you the JPG preview that is embedded in all RAW files. Lightroom shows you the previews it has generated, so if it has to spend time generating the previews, then you will see this slowness.
Maybe you should try generating full size previews. It's a tradeoff .. spend the time at Import generating full size previews, or spend the time generating previews when the user wants to see the image.