I think that checking your word count is the shortest way to lowering your writing speed.
Maybe it was just my personal problem, but since switching to a different program that doesn't show the word count, I am doing fairly consistent 2k words a day. Compared to the time before, when I rarely did more than 1,5k in a day, that's a massive improvement.
Possibly bad idea: make a program using GPT that spits out tags for the story you feed it, so you don't need to search through the whole list to find the matching ones.
Or, actually, I wonder if it wouldn't be enough to ask directly.
Today I truly understood why some people write 10k words long chapters.
I wrote 7,3k words in a single chapter (not in one day, I'm not that far gone), still got a lot of things to say but it's high time I went to bed, and I've no idea how to divide it into smaller chunks without brutally cutting it apart and ruining the pacing.
On January 11th, at 6pm, I started writing a new story of mine, wanting to try my hand at some soft LitRPG. I wrote ten chapters, totalling over 27k words, all edited, in slightly more than 5 days.