Quoted from pintechev:
It’s a great question. Hard to answer. Hard to know. Same question I have about my Stern SPIKE games.
One thing that kind of bugs me is Stern Spike seems to be running the code directly off the SD card whereas the CGC system runs from a resident built on memory. In the arcade industry there are a number of examples where running a game from what was meant to be used as a temporary storage medium (SD cards, USB sticks etc) has resulted in premature failures of said mediums. (corrupted software). I am dealing with a number of very intermittent issues with some of these Spike games. Wish I could take the SD out of the equation. Stern will eventually get this right. But at this point I know they are sending a lot of parts out and doing various things a company would do to try and iron out these bugs. On the flip side, I have only seen or heard of one electronic issue with a CGC game. An AFMr SE had a 2 lights not operating properly out of the box. A new board was sent and no more electronics problems have been seen. Mind you these are routed games I'm talking about here so I felt good enough to get an AFMr and MMr for my personal collection based on just how well these have been performing on location.