I purchased this case from amazon. With the thought in-mind that I could create my own graphics for the frosted back. The materials for the case are...
Got me a SUPCASE LG G3 Case - Premium Hybrid Protective Bumper Case (Frost Clear/Black).
Really wanted the transparency on the back so I could insert my own graphic. Here's a quick proof of concept.
Flash a stock rom, get a lock within Maps or a GPS application, then flash back to this ROM. This happens from time to time and this is a tried and true resolution.
Other than flashing to a stock ROM, which does usually work, you can also try ...
It really does seem to do well, here are 5 days worth of temps logged using 3c toolbox pro...the only spikes are when in daydream mode.
Heres my layout. Also printed out an insert to go in the back of my supcase: