Good app with critical flaw

This app was good at finding duplicates and quite fast considering the size of my photo library. It found over 3,800 duplicate images. However, scrolling through them is agonizingly slow, even on a new 5K iMac with max specs. The thumbnails are just placeholders and dont cache in until the scrolling stops, so it feels very laggy. I could live with this, but the BIG problem is that I get about 1/10th of the way down the list, making sure they are in fact duplicates, and then the program crashes. POOF. This has happened every time I try to use it. I could just trust it, mark all, and hit delete. But of course I have that nagging neccessity to look at the images and be sure they are in fact duplicates.

Anyway, I expect these are just some cacheing and memory leak issues. If they could speed up the loading of image thumbnails and prevent crashing, this is a five star app. Unfortunately for now, unusable for me, and possible others with large (~50,000 image) libraries.

PFjellman about Photos Duplicate Cleaner, v1.7