ram usage in lightroom

My ram usage on my pc is reaching over 16k mb and causing my pc to become unresponsive. I have 64 gb ram, a AMD Ryzen 7 7800X3D, and a nvidia 5090 gpu. I feel I shouldn’t have these kinds of issues with this app on my pc, and this is only recently. Nothing on my pc has changed and since my last usage this has occured. What changed?