Noticing significant UI slowness when working with a flow having 66 elements. The slowness is with scrolling through the flow as well as editing steps or relocating steps.
Are there documented best practices on how to address this, e.g. linking multiple flows, recommended sizing for a single flow, etc.?
Release or Environment
There is no hard limit on the flow size [Actions, Logic, etc...]. One of the best practice is to create the flow in an application scope rather than the "Global". Scope matters for the flow performance
Best practices on Flow Designer: https://community.servicenow.com/community?id=community_blog&sys_id=09becbf3db589b403882fb651f961986
Community article: https://community.servicenow.com/community?id=community_question&sys_id=1cc084aadb03bbc85129a851ca961972