Thanks for joining the NUC community.
By removing the USB 3.0 drivers you will have the USB 3.0 ports working as 2.0 version.
Does this problem occur with earlier BIOS version?
You could downgrade BIOS version if you run BIOS recovery, see here for instructions: Intel® NUC Boards and Kits — BIOS Recovery Update Instructions
File name:WY0028.BIO
Allan.