XPS 9320 throttling to 0.40ghz

I've been using my XPS 9320 for over a year. Recently, 2 or 3 times per day, the laptop will randomly throttle down to 0.40ghz. The throttling doesn't seem to have any specific triggers, even if the CPU is barely being used and not hot it will throttle to 0.40ghz.

I searched and found people saying this is caused by a signal called BD PROCHOT. I installed the recommended software called ThrottleStop and it shows that BD PROCHOT is active, unfortunately I am not able to turn it off with that software.

I tried changing some of the power options, but that didn't solve the problem. The only way I can find to fix it is to unplug the power and plug it back in which works most but not all of the time. After I do that the CPU returns to normal speed.

Does anyone have a solution to this issue? I like the laptop and want to continue to use it, but in the current state it is a daily annoyance and I need a working laptop.