Sorry. What is the source footage? Usage of full computer resources is often not possible, depending on the format. Premiere Pro uses as many resources as it needs for the job. We do need more info to make any diagnosis, however. Hope we can help.
Thank you for getting back to me. I called the help line and the tech made some changes in my sequence settings on the one project he got 40% CPU usage and 50%GPU but on this other project while trying to render and replace a Mogrt the computer started off strong with 40% CPU and 50%GPU but after a few seconds dropped to 8% CPU and 1% GPU.