Slow. Not fast. Not worth downloading if you’re looking for fast!
This is not a good file manager if your folder item counts are high and/or those folders are on remote servers. Mine are hundreds to thousands of items. It takes many seconds to browse between local folders. One remote folder I opened has 8600 files in it and the app never listed the contents of the folder after several minutes of waiting. Commander One became unresponsive and required force quit. I cannot say it was a problem with the file server because FileZilla was able to enumerate the contents instantly and other OS platforms are also read the folder instantly.
Forward! about Commander One: File Manager