I recently received my Presonus Atom and I have been using it for the past few days with S1 V4 pro. I have noticed somethings that don't seem quite right.
Firstly, when using the Atom to drop in a pattern, it ruins my loop markers. I tried setting an 8 bar loop with no problems from the atom. I dropped in my instrument Impact XT and as soon as I press the button - which seems to be pad 5 under song setup, not pad 9 as the instruction manual states - to drop in a pattern, my loop shrinks to a one bar loop and drops in a singe bar of pattern. Secondly, the mapping for the buttons is slightly off while in native mode in S1 V4.
I am using the most recent updated software for the Atom (firmware 2.70), Universal Control (audio box vsl44).
Relevant specs -
Windows 10 x64 pro - i7-3770 - 16GB RAM
Studio one V4 (build 126.96.36.199941)
Universal Control software (build 2.9..49805 win 86???)