Ok, this is a time-intensive procedure.
You basically get best results by running each separate "filter", then re-running it on each completed file. For example, run a de-noiser filter, then sharpen it, then upscale it, etc... Just something basic as that takes 3 renders, each taking over an hour a minimum.
I found that it's best to cut out a 30 sec clip of your favourite scene & run the filters to make sure you have your recipe of filters, then commit to that with the full movie. It easily pulls 80%+ of the system resources and cranks the temperature up, so you're going to want to lay off using your PC for anything else while its running. So yeah, you really have to be picky as to which movie you want to dedicate this to.