Short Answer: No
Gigabyte Z370XP SLI
4GB G-Skill RipJaws V DDR4 2400 (Running at 2133MHz)
EVGA GTX 1060 6GB ACX2 Short-Board (06G-P4-6163-KR)
300W Power Supply
Windows 10 Pro 64-Bit versus Ubuntu 18.04 Desktop
Graphics (Shader) Clock 2012-2025MHz; Memory Clock +800MHz
The slightly slower times in Linux can likely be accounted for as the GPU clock in Linux was closer to 2012MHz where under Windows it was fairly consistently at 2025.