Grey Screen When There Are Multiple Avatars

Essentially what the title says, whenever I play vrchat on my vive pro headset and I join a world with a bunch of people, my headset loses tracking and goes grey. Does anyone know how to fix this or what might be causing the problem? And I cant alter my PCIE either(Looking online, that’s what everyone says they did but after trying it myself, I don’t think that’s a solution I can afford).