I have just been reading about photoshop and the delay problems when doing an action (hue and sat, lightness contrast etc) several adobe community professionals are suggesting its fixed in 21.2 I can assure them it is not I am running latest mac operating software and latest photoshop and its still lags terribly. Has anyone actually come with a solution ( obviously having read all 8 pages of comments, the rulers things did not work, the dialog boxes removed from the main photoshop window did not work, this is a huge problem for a professional working at speed it might have halved my production time of complex retouches and illustrative subjects.. come on Adobe offer some help