An update for everybody:
A couple weeks ago on the older RaceChip firmware, I blew spark plugs 1 and 5 running Race mode on 91 fuel. On 100 octane, this setting was fine. This, and RwYeAsNt's spark plug failure was I believe what pushed RaceChip to turn down their settings. As of a couple days ago, my spark plugs were changed, and I gapped them to 0.025". I've since put around 150 miles on it so far in Race mode, and it's been perfectly fine! I'm not going to outright say gapping is the end all be all solution, but so far it works great. I will let you all know if something else happens again.
On another note, looks like the app is updated such that every time you connect it auto-resets to eco mode. It's probably a good idea.