Yea things break right for us with big flooding rains and meager winter shortwaves that queef out an extra inch but when the time comes for a big dog, we get slapped by his tail…
The AI versions must run on less resolution kind of like what the regular models did back in the day. The precip and qpf fields are broader but to me they may be handling the upper levels better as a result. IDK, just my observation…