Here is the link for the portable zip version (second link at this site):
https://freecommander.com/en/downloads-portable/
It could be Defender, I'll check if I have a delay too, with/without Defender.
Anyway, starting FC automatically at Windows startup is another issue, it's really weird, you can try to search for freecommander.exe on C:\ in FC, perhaps you have more installations, then backup settings folder - if needed and uninstall/delete all FC installations and unpack the new portable version to a new path, don't use the Program files folder.
wynford wrote: 07.03.2020, 02:28i renamed the FC folders and did a fresh install of FC with no changes, rebooted and the fresh FC started about 20 seconds after windows was loaded
Just to make sure, FC was started automatically, right?
EDIT: I tested FC start, PC restart, wait 2 minutes, start FC, it takes just few seconds (2-3) to start, with Defender real-time protection on or off.
Of course, while other programs are starting, it may take longer, it depends on how many programs are auto-running at startup.