I like Capture One photo editing software. It’s a great RAW editor, with a lot of tools.
However, it tended to be very slow and clunky, even with a high end computer. The current version I had was 9.2.1. There was update to 9.3, so I downloaded and installed it.
And I tried it out, and was pleasantly surprised to see that the masking tools was faster and not so ‘draggy’. Adjusting the sliders was immediate. I don’t know what they changed, but I was happy to see it working much faster than it had before.