Rhino 5 not using GPU in viewports?

Here are the results of the test :

Holomark 2 v2,2,03

Total Score: 41407
Total Runtime: 152.47 sec

GPU scores: 24290
GPU_01 - 400.00 fps - Cube 4 tests
GPU_02 - 49.50 fps - UDT Shape
GPU_03 - 85.50 fps - Wireframe
GPU_04 - 58.10 fps - Shaded
GPU_05 - 40.80 fps - Rendered
GPU_06 - 39.50 fps - Block Rendered
GPU_07 - 22 units Nurbs @ 5 fps in Wireframe
GPU_08 - 14 units Nurbs @ 5 fps in Shaded
GPU_09 - 50 units Nurbs @ 5 fps in RenderSpeed
GPU_10 - 128.20 fps - RenderMesh Render
GPU_11 - 156.30 fps - RenderMesh RenderSpeed
GPU_12 - 129.90 fps - JoinedMesh Render
GPU_13 - 149.30 fps - JoinedMesh RenderSpeed
GPU_14 - 5 units mesh @ 15 fps in Shaded
GPU_15 - 8 units mesh @ 15 fps in Render
GPU_16 - 26 units mesh @ 15 fps in RenderSpeed
GPU_17 - 113.60 fps - mesh in Rendered Studio
GPU_18 - 14.80 fps - Nurbs in Rendered Studio
GPU_19 - 29.50 fps - Block Illustration
GPU_20 - 87.00 fps - 2D single
GPU_21 - 9.50 fps - 2D massive (20x)

CPU scores: 17117
CPU_01 - 8.55 sec - Booleans and Contours
CPU_02 - 1.06 sec - Twist and Taper (UDT)
CPU_03 - 3.91 sec - Meshing Mini
CPU_04 - 0.03 sec - Extract Render Mesh
CPU_05 - 0.04 sec - Join Render Mesh
CPU_06 - 11.03 sec - Reduce Mesh
CPU_07 - 1.57 sec - Calculating Technical display
CPU_08 - 3.02 sec - Making Silhouettes

MSI
MS-7A54

NVIDIA GeForce GTX 1080 - 4095.0 MB
DriverVersion: 21.21.13.7892

Intel® Core™ i7-6850K CPU @ 3.60GHz
NumberOfCores: 6 NumberOfLogicalProcessors: 12
MaxClockSpeed: 3.6 GHz

TotalPhysicalMemory: 32.0 GB

Microsoft Windows 10 Professionnel

  • None - 64 bits

Rhino 5 sr 13 64 bit