I have 9 GPUs on Ubuntu 19, on z170 with i7-6700k (each GPU using x1 PCIe lanes), one enterprise sata SSD and 32GB of RAM. All the GPU’s work very well together, using only 20% of the CPU. The problems start when I fire up my QEMU VM’s (26 of them) on the very same system. When VM’s are running I can’t initialize some of the GPU’s. VM’s are set to use only 5 threads. There is ~12GB free RAM memory, and 50GB SWAP file on the machine (only ~2GB used). The same issue occurs when just using the CPU for random stuff (~ 90 % CPU Usage constantly), regardless of VM’s. What could be the issue? I’m clueless at this point.