HI @joel_e_b
Just my 5 cents worth;
Have you had a look at the docs about enabling System_Thread? Or maybe this post by @rickkas7:
I worked with Threads once and reverted back to normal mode very quickly, haha. It seems do work well where ‘multiple threads’ are required but it does come at a price. I tried using it in a voltage/current sensor device and even though it had the desired effect, it also come with some unwanted side effects 
In short, for me it was not as simple as adding SYSTEM_THREAD_ENABLE, I had to rework code quite drastically and could not manage to resolve the unwanted behaviour, so reverted back 
Having said this, my C++ is shaky at best, but I have heard about some more seasoned programmers finding’s it not so easy as it seems “the way things work” changes drastically. I will leave you in the capable hands of Scruff and the rest of the forum, SYSTEM_THRRAD_ENABLE is over my head.
Hope you resolve this.
Regards Friedl.