Computer freezes when I load usd file in Isaac

When I load the pre-existing usd files into Isaac. The entire system freezes and I am unable to do anything even the cursor stops moving. Does anyone know why this might be happening. I am currently using a Quadro RTX 8000 GPU and the CPU specs are as follows:
CPU: Intel Core i7 3.2 GHz
RAM: 16 GB

Probably is a memory issue.
check your memory status once this happens

yes, I checked the ram usage and it ends up using all of it so, I’m assuming it freezes because of that.