I use an Auna 900 USB mic mostly with Zoom - apart from a gate-effect there is hardly any noticeable effect in addition to the noise-canceling algorithm that is already built-in with Zoom (when you have it activated, of course).

Another issue is more serious - and others have addressed the performance issue. I am running on a mid-class office Desktop PC (4core) the kind where you would expect stuff to work. When testing/comparing with the built-in function I hardly get any audible effect which might be due to the fact that the program does not work at all on slower machines?

I was running a recording studio in the past so can claim to have some knowledge when it comes to denoising.

Since I do have access to it I am instead running my commercial denoise VST plugins through a light-weight host for live-applications now. I would have loved that Krisp did that for me but it did not. Tested like 2 weeks, sadly - refunding.

I am aware that 2 tacos is quite harsh but it reflects my own experience with the tool. It did maybe something, but just a little bit.

UI is great, if it then also works for you, congratulations!