Upgraded to Studio 17, performance drops

Hey y'all,
I just moved up to Resolve Studio in hopes of improving my H.265 10 bit performance. The opposite has happened, it now plays back slower than with the free version.
PC Specs (older)
Core i7 4720 2.6
16gb ram
GeForce gtx 960M
SSD for system and media drives
I've gone thru every setting I am aware of in Resolve and in Windows/NVidia Control panel. When I play anything in Resolve, the CPU utilization goes up and the GPU stays at or near 0%.
Any thoughts?
I just moved up to Resolve Studio in hopes of improving my H.265 10 bit performance. The opposite has happened, it now plays back slower than with the free version.
PC Specs (older)
Core i7 4720 2.6
16gb ram
GeForce gtx 960M
SSD for system and media drives
I've gone thru every setting I am aware of in Resolve and in Windows/NVidia Control panel. When I play anything in Resolve, the CPU utilization goes up and the GPU stays at or near 0%.
Any thoughts?