Hey guys! Yesterday I had to format my computer beacuse of Windows uptade problems. That said I installed the LR CC 2015 and the revelation mode was just like that. I already tried to unmark the Histogram arrows and it did not solve out. Please help! I'm new to the forum so please be patient and sorry about bad english too!
HI Carlos Omarp,
Could you please uncheck the Use Graphic processor box under Lightroom's preferences> performance panel.
Restart Lightroom and check if it helps.