I also noticed that when using CMIS Connector at Adobe Drive 5.
I implemented my own CMIS Server and the Adobe Drive CMIS Connector on Adobe Drive MAC works extremely slow.
E.g. when opening a folder which contains 35 files there I noticed more than 200 CMIS ATOM HTTP requests over the network.
At Adobe Drive for Windows the speed was extremely fast. Not comparable to Mac.
Maybe the AdobeDrive4 Filesystem implementation on MAC is very slow and triggers the Connector API too often.