Hi, I have Lr CC, Windows 10, when I use the Adjustment Brush I need to go all the way up or down (e.g. exposure) to see the very little adjust, Auto Mask off, density 100. Can sbdy explain what's the problem? Thanks in advance!
Have you set the Flow to 100?
Make sure the flow slider is set to maximum value.
If that does not help, would suggest you to reset Lightroom Preferences: Resetting (or 'Trashing') the Lightroom Preferences file | Lightroom Forums
Also, make sure the program is updated: Keeping Lightroom Up-to-Date