This message was posted on behalf of Intel Corporation
In regard to your inquiry, the option to disable speed step on the BIOS is under the tab that says “power”, then look for “enhanced Intel® speed step® technology” .
Now, remember that the performance depending on the expansion devices being used might not be as expected, some of them are not fully compatible or they might not work at all, this is just to let you know in the case the problem remains even after disabling speed step. Please make sure the drivers are properly installed and up to date.
Here is the link where you will find all the drivers for the NUC:
Any further questions, please let us know.