I've now had a few batches of beer that have come out with an unexpected bitterness. I had wondered if I was using too much bittering hop, by latest attempt was the Mad Fermentationish NEIPA, which had no hops atall before 15 minutes, and should only have come in at ~35 IBUs, but yet again I seem to have an overly bitter beer. I'm using an immersion chiller, in a mibrewery (aka hopcat, ace, klarstein etc), so generally get under 80 degrees pretty quickly. I'm then fermenting in a fast ferment, and kegging. The NEIPA has also taken 2 days to carb up even at 50PSI. Does any of this sound familiar to anyone? Any suggestions for things to tweak in the future?