For the last few months I have had an issue where the FPS drops drastically, from maybe 50 FPS down to 8 or 9 FPS. The FPS drop only lasts a couple of seconds, and then it goes back up to a normal level. This repeats every few minutes. It happens in both large parks and also blank maps. I completely wiped my hard-drive and reinstalled Windows and Planet Coaster. As far as I can tell, there are no other processes running in the background on my computer, and I have updated my computer's graphics drivers. Any idea what could be causing this?