Blender Placeholders Creates Duplicates

I’m trying to render an animation with Placeholders turned on and Overwrite turned off. I’m rendering on five computers at the same time and I believe that some of the frames are being rendered multiple times. I’ve noticed that during renders, files that already exist are being rendered with (1) attached to the names. Since these files are duplicates, I then have to go into my folder and manually delete these files, which would be a pain if I had a large amount of frames. How can I solve this problem?

I think you must turn on overwrite, so the files can be overwrited and not duplicated with a number(1), but I’m guessing