jim_104 :
I'm currently using HeavyLoad (if you know what I mean).
I am seeing more than just your current issue. The i5-6200u's base frequency is 2.3GHz. You saw it at 2.195GHz.
Turbo boost is enabled automatically. That may be why you can't find the option. I don't know for certain. Some lap and desktops do have the option to enable or disable. A couple things you can try.
Right click on your start button and click Power Options. Change plan to High Performance if it isn't already there.
On that same screen click on change plan settings. Click on change advanced plan settings in the resulting windows. Under Processor management make sure Maximum Processor State is at 100%. That 2.195MHz suggests either your stress test isn't stressing the CPU enough or the speed is being throttled due to settings or heat.
A program you can use is
https://www.techpowerup.com/downloads/2288/throttlestop-6-00 That can stop some common sources of throttling.
http://www.majorgeeks.com/mg/getmirror/intelburntest,1.html IntelBurnTest is a stress test designed for Intel CPUs.
WARNING that is a direct link to the download. The download will start automatically. Itbrought my CPU into the high 70s and turbo boost did "overclock" my chip from 3.5GHz to 3.9GHz like it is supposed to.