Heya, I'm having a pretty extreme issue with FPS drops. It appears to be a VRam issue, as nothing else can really explain it.
Every 2-4 minutes, my frames drop to around 3/second for around 5 seconds. At first I thought it was heating, but I checked my temps and they were fine - my fan wasn't even running high. Additionally, I noticed that during a heat spike (I had on my old laptop) and frames dropped, it would cause the CPU/GPU to max out. In this, it's the opposite; my CPU/GPU usage drops to around 15% for the duration, before returning to around 40%-60%.

I feel like this is a memory leak, and the game is taking care of it by dumping the memory (a lot of things vanish/reappear when this happens) and reloading. Any suggestions on how to fix this, or what may be the true cause?

I'm on an RTX 2060 with 6 gigs free VRAM (not great, but it's what I got), 8 gigs RAM, on a SSD and a decent enough CPU (can't remember off the top of my head).

To compare, I can run a game like Monster Hunter World at max settings at a stable 60 fps. Same thing with Dark Souls 3.