Hardware requirements for terraform on bare metal

When applying my terraform files, I get an api error when on proxmox. I suspect that it is either CPU or Storage speed limited, leaning more towards storage speed. Does anyone know what requirements terraform needs to work properly on bare metal? The company I work for is in the cloud and running bare metal which is why we need it to work not just in the cloud.

So far the only way I can get it working is using parallelism but creating vms one at a time is not ideal for large deployments.

Also I hope this is a correct place for this post, I couldn’t really find a better place.