I also have key commands to lower the clip gain by 1dB quickly.
Then, there’s the preference "Editing > Audio > “Use Mouse Wheel For Event Volume” which I never would activate because it’s a mine field. You touch that scrollwheel of the mouse and you mess up all your clip gains. But I guess you don’t mean that. I guess you speak about grabbing that clip gain handle and moving it up and down with the mouse, just as you grab and move clip fade handles, correct?
I don’t know why this would not be enough resolution. I agree, if you’re really on the bottom, at -30 and downwards, any move with the mouse, any pixel up or down is about 1.4dB. This only happens if you have hot recordings and want them to be really faint in the background. But then I don’t know if you need that kind of resolution, so 1.5dB in that range is fine to me anyways. Personally speaking.
As soon as you’re in the -20 range, you have 0.5dB per pixel, which is quite good already. And if you use your clips near the 0dB clip gain point, you make changes of 0.03dB. I don’t know why this would not be enough resolution? Or do you speak of something else?
I haven’t found a modifier that locks precision at, say, 0.01dB. It seems there is none. Which is funny. When I hold SHIFT and move the fader, I can really precisely move it with the mouse. It goes into fine mode. But this is not working with the clip gain.