Usually when I change the setting or empty the garbage bin.

Are there any plans to add support for Windows 10?

I just purchased ObjectDock a couple of days ago, not realizing that Windows 10 was not supported (it seemed to be working fine at the time). In use it often stops responding. I have it autohide and it often won't come up, and then after considerable time it starts working again.

ObjectDock does have a trouble-shooting screen you can try if you like.  See here for a screenshot (the page is on a different topic):

https://esupport.stardock.com/index.php?/Knowledgebase/Article/View/298/88/i-need-to-backuprestore-my-dock-settings

A good place to start is to select "Temporarily disable all docklets", an incompatible or misbehaving docklet can cause a problem.  If you disable all the docklets and your problems go away, you can try to narrow it down to which docklet(s) is causing your problem, process of elimination.