Sluggish Thumbnail List on Leopard

Hello to all

Sorry, but my first topic is to present problems.... 🤭

Recently I downloaded the free trial for Capture One Pro 3.7.7 for Macintosh.

I was very pleased with the program, and i'm thinkin in buy it in the near future, leaving behind Adobe LightRoom wich I've been using until now.

But something is bugging me...
I installed and used C1Pro on OS X Tiger with no problems. Works like a charm! But now I'm upgrading my machines to Leopard.

In the test machine I installed Leopard, and as you already know, the C1Pro installer does not work at all. So I copyed the C1Pro .app from the install package, and it worked as expected

I don't notice any changes in the behavior exept for the fact that when processing any large folder, the thumbnails keep reloading each time I move the thumbnail slider to scroll trough the images.

If I go from top to bottom of the list it takes an eternety to proper display the tumbnails. This really slows my workflow down...

In Tiger this is not happening. There is virtually no delay when scrolling...

I know that C1P 4 solved many issues with leopard, but I tested it and it's pretty much heavier and sloggish than the 3.7 on my machines.

Any ideas?

Many thanks in advance
André