I used it as long as possible with Retroactive till maybe about a year ago on an iMac with an external SSD drive. I was actively trying to fight the Adobe tax.

I used it as long as possible with Retroactive till maybe about a year ago on an iMac with an external SSD drive. I was actively trying to fight the Adobe tax. It was fine for quite a while, but in the end, it just got too buggy. Each macOS release seemed to slow it down more, and very often, thumbnails would not render. It doesn't help that Retroactive itself doesn't seem to be actively maintained.