Dropping Files into Folder Action folder whilst running?


First post, but I’ve lurked the hell out of the place finding information.

I’ve got an automator folder action that renames files, then opens them in Photoshop, and runs a photoshop action.
My camera will be tethered and photos drop into a folder called ‘Dump’.

I’ve setup an app that moves files every 3 minutes from the Dump folder to the Folder Action folder, titled ‘Uploader’. Trouble is, that if photoshop is still processing files from the last lot of images the new images dropped into ‘Uploader’ don’t process?

I thought the Dump to Uploader app would cover me, but sometimes a big bunch of files drops in that 3 minute window.

Any thoughts on how to get around this issue?