Was yesterday’s optimization before or after your screenshot?
And as long as we’re completing the picture – what are your parameters now, as text, please?
I understand it feels that way – because bar graphs do that. But even just eyeballing it, you’ve got around 5K cards out of ~20K cards that aren’t in that 95%+ bar. That’s not nothing. And D is just one piece that goes into scheduling your cards.
While reasonable minds can differ on whether “ease hell” ever even existed – the fundamental difference from SM-2 is that FSRS grows and changes. Each month when you re-optimize, FSRS reconsiders what it knows about your memory curve and updates the memory state of your cards.
I wonder – How has your retention been for the past couple months [Stats > Retention]? Has it been up or down from before FSRS? Has it been meeting your Desired Retention? I also wonder if you’ve “rescheduled” your cards since you enabled FSRS (I’m not recommending that, but it helps to know if it has happened).