Use Auto Advance to Speed up Rating, Picks and Flags
If you want to speed up the rating and flagging process try turning on Auto Advance setting in the Photo menu.
Now every time you rate, pick,
unpick or set a flag; the current image will be tagged as
normal, but the filmstrip will auto advance by one image.
This works in both the Library and the Develop Modules. It
also works even if the filmstrip is not visible.
Let me know if this tip helps you.
More Image-Space
Lightroom tips.