LR on new Mac Pro - Initial Reviews Not Positive

[rafaeld40474899]

In preparation for the new Mac Pro with the Pro Display XDR, I've been reading the Mac forums and reading intial reviews on how LR behaves with the new system. Unfortunately, things do not look good. I've been following this topic since Apple (and other Windows manufacturers) introduced 4k and larger monitors. So disappointed.

From: https://forums.macrumors.com/threads/macpro-7-1-lightroom-and-ps-configuration-and-more-questions.22...

(1) I found that Lightroom is using a lot of GPU memory, after switching between images in the develop module can fill up VRAM very quickly, is this means 8gb videoRAM is not good enough for LR(best performance) now? btw Im using the newest LR with GPU accelate ON. and a 2560X1600Monitor

(2) Well I got my new Cheesegrater today with a single VEGA II, and I can report that the latest Version of Lightroom Classic is still SLUGGISH AS HELL on my 5k display

[dj_paige]

I'm not surprised, given the huge number of reports of LR speed problems witk 5K monitors, there's no reason to expect these problems to go away with an even larger monitor. In fact, I would expect an even larger monitor to make Lightroom slower. 

[Chrisjhood]

This is more than just a problem with 5k displays.  I ran the same two 4k displays on the trash can mac pro for the last 4 years  and never had an issue till the 47mp files.  Same monitors same catalog and a brand new catalog are unuseable on the new mac pro with the pro vega II 32gb card.  Its def an issue with lightroom and that graphics card. 

[Jao vdL]

How does it perform when connected to your 2560x1600 monitor instead? I agree with dj that it is no surprise whatsoever that it is sluggish on a 5k monitor.

[rafaeld40474899]

I do not have the new Mac Pro at this time. The reviews I posted came from the macrumors forum.

[Jao vdL]

Ah. Just browsed through these and at the last page there are some screen recording movies of performance and it actually is really good. Very fast in Develop and scrolling looks completely normal. Strangely the folks there think it is slow but the screen recording movies look fine but what they show is exactly how Lightroom is programmed. Scrolling in the library module is never smoothly animated - that is just the way it is programmed.