New to linux, extreme cpu usage, don't know what to do

Hello @theseus :wink:

Sounds like the driver is not loaded properly… Could you open a terminal and type:

grep glx /var/log/Xorg.0.log

There should be displayed this:

$ grep glx /var/log/Xorg.0.log
[     9.305] (II) LoadModule: "glx"
[     9.333] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[     9.339] (II) Module glx: vendor="X.Org Foundation"
[     9.375] (II) Loading sub module "glxserver_nvidia"
[     9.375] (II) LoadModule: "glxserver_nvidia"
[     9.375] (II) Loading /usr/lib/nvidia/xorg/libglxserver_nvidia.so
[     9.488] (II) Module glxserver_nvidia: vendor="NVIDIA Corporation"

I believe it is some sort this problem: