Hi kdirth,
I have a P4000 card and CSL runs well with it. With some types of geometry (thin walled), it is possible for the CPU to so much of the work with the GPU only contributing a little. This will drastically change with an improved Ansys solver in our next builds of Creo. In this solver, the GPU usage will increase and get much closer to the memory limit of the graphics card.
There is a small possibility that a setting is incorrect on your card. If you look at the NVIDIA control panel and select 'Manage 3D settings', you can find Power Management mode and make sure it is set to NVIDIA driver-controlled. Almost all of the time, the default settings work for Creo Simulation Live.
If you still continue to have issues, please email me offline and we can get together and troubleshoot the issue.
Thanks,
Todd Kraft
CAD Product Manager
tkraft@ptc.com