I've no idea if this affects the ACA's (TLDR) but I've just removed caps E123C and E125C from my rev 1D1 (yes, you read that right, 1D1!!!!!) board as i kept getting strange crashes that got worse and worse the longer it was on with my BPPC.
Originally thought it was heat (as they say 1D1s are best for accelerators), and tried my darndest to alleviate it then thought what the hell it's only two caps, can't do much harm.
Anyway, so I've done it, and It's been working flawlessly now for 3 hours (would be lucky to get an hour before)
so just cos you've got a 1D1, you're not completely immune :P