Loved it! I too experienced slowdowns on a decent PC - so I assume there are some issues to resolve there. Maybe make sure your art-elements are set up properly. Wasn't sure the engine used here, so not sure what to suggest. I also was unable to use my ps4 controller for whatever reason.
The atmosphere was great, and the idea for the puzzle elements was nice. It took me a bit to figure out the full utility of the first item gathered.
Great work!