I was reading some tutorials on how to speed up performance on ps (version cs6) and one option said to increase the amount of RAM from 70%, so i increased it to 80%. Now everytime i open an image they are all very grainy. I put the settings back to 70%, but ps is still messed up. Help.
PS i had this problem before and the ps Support person, had me reset ps to default settings (cant remember exactly how)
Try changing the image pyramid levels back to 4.
In photoshop settings see your cache levels preferences>performance my cache if its one set it to the default 4 if that doesn't solve the issue try resetting photoshop preferences by pressing and holding ctrl + alt + shift and double clicking the photoshop icon and then choosing yes when asked to delete the photoshop preferences