Like Kare-uso, I use the reorder script, and if I don’t know immediately but I have a nebulous feeling that the meaning/reading is in my brain somewhere, I shuffle. More often than not, I have the answer immediately upon seeing it 2 minutes later.
I would like to add that there is evidence that long-term memories form more strongly when you review the item just as you’re about to forget it. So taking an extra 20 seconds to let your brain search for the memory may be worth it. (I read about this years ago and don’t have the source at my fingertips, but I could go searching for it if asked.) Many people use SRS in just this way, tinkering with their anki intervals just so, trying to time their reviews so that they’re just about to forget the word when they see it. These reviews are a bit more painful and they take longer per item, but the reviews are spaced out more, as you know.
You might think that learning something by almost forgetting it would make it pretty useless in a practical sense, but in my experience, trying to recognize words without context–as in WaniKani–is about as difficult as it will get. Of course, you know that you should know the word since it’s in your reviews, and that makes it easier than seeing a word you’re not certain about in “the wild”. But in the wild, you’ll usually have context. So a word you might not recognize in 20 seconds on a plain purple screen may take 3 seconds to figure out in the middle of a sentence.
There are some words I fail at time and time again, and I use the self study quiz script for those. It interrupts SRS, but I’m not bothered by that at all if it helps me learn better. Maybe you have some leeches that you could train in the self study quiz. I’ve also found that using the quiz to study words in reverse–that is, audio to meaning, meaning to reading, meaning to kanji, etc–makes those words much, much more accessible when I see them in my reviews again. You might try that and set up the quiz to quiz you on words you’ve failed during the last review, and you can make sure they never faze you again. You won’t benefit a whole lot from increasing your meaning percentage unless your reading percentage increases too, so you could use the quizzes to drill audio to meaning and meaning to reading to bump up that 85.25% to 92% or so, and strengthen those connections in your brain.