LIGHTROOM: adjustment brush , slow scrolling through list

Can you explain a little more please? Do you mean you'd prefer not to have these presets?

No, I don't mean it that way. I spoke about that in LR3 when clicking on the tray icon brushes, a list with the settings (exposure, contrast etc.) come on top of the modules. Let's say I open all modules: basic, curves, hsl, lens corrections, etc. I am at the bottom, of the module calibration. Click to the button adjustment brush. In LR3 I immediately see a list with the set of the brushes, in the LR4 I need to go upstairs to the module, basic, to see the same thing.

Ah, I see, thanks. I can't reproduce that issue so far. Can you confirm which operating system, which LR4 dot release, your screen resolution, and ideally a screenshot showing the issue please?

Issue has been resolved! Thank you all for your help!))