Ha! I thought my ascent meter was bad because it says I exceeded the limit in every dive, even 26ft OW Cert dives. But I just downloaded the dive profiles and saw there’s no way I could have ascended that fast where it says I went over. So I realized, it was probably some arm flailing! I didn’t recall any beeping or flashing but I’ll pay more attention (and stop flailing).
Mine's not beeping (anymore) but the logs shows tons of "momentary" ascent rate warnings too.