I tried to make morph between two faces 1920x1080 in 25p comp. End result was little "jumpy". Did I miss some settings to get my morph smooth?
I had Quality>Ultra, antialiasing>4x4, Mipmap>smoothest, Auto Align and Smart Blend checked. Accumulate folds was not checked because it made my render crash.
Good to hear. Although not necessarily your problem, note that to have Hold Edges checked and Auto Align as well can cause some swimming as one setup tells RE:Flex to "go there" and the other to "come back"... the new update has a different behavior for Smart Blend (maintains a full alpha at the frame edges through the mix -- blend 0 to 100% -- if the two sources have full on alpha to start) and so is preferable probably then Hold Edges when doing Motion Morph.
Also to do both 4x4 and Smoothest Mip Map might be overdone and in the end uses incredible amounts of memory if you are not at least in Less Memory mode (vs Faster AA Method). 4x4 Anti-Aliasing + AA Method to Faster is probably a good way to kill your favorite app memory management (as it will then require 16X more memory about).