Duplicating layer recreates filter

I'm having a frustrating problem that reduces my productivity to virtually zero with Photoshop CC. I apply a filter from a plugin like Luminar, On1 or a Macphun plugin to a layer. Works fine. Then, working with the same file, when I duplicate any layer it automatically applies the same filter. I can't keep that from happening, and it applies the filter to every layer in the file! I've tried restarting PS, rebooting, saving the file as a different file name, all without any solution. help!