Wacom Tablet: PS CC: Alt + Right Click + Drag not registering in a small area

i'm having issue when use drag resize brush intuos 5 pro small.

when command, circle showing size of brush pop end having move pen distance before begins register. makes difficult make small changes brush size quickly.
the issue isn't time based can move pen within small area of no-change long want , won't start change size of brush.
any thoughts?

i updated photoshop today (november 4th/ 2016)
and have tried tablet on different computer , problem not present (that being brush size changes move pen amount)

 

windows 10 installed on both machines tried.

 

any great appreciated. it's small thing affects work flow , mental space when working.

-allison

are wacom setting same on machine tried? did try resresetting photoshop tool, user id  photoshop preferences , wacom configuration settings on machinte not working correctly?

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