Does Silhouette frame rate settings in the session just affect the playback speed or does it impact in other ways. So to be more clear with what I’m asking, is each frame in an image sequence still treated as a frame regardless of frame rate setting.

It pretty much just affects playback speed. The session rate is also recorded in output files, if your output format supports metadata (ie. EXR).

Perfect, thanks for confirming that Paul that what I thought.