It is the evolution of the WK user. First post is usually of the “It is too slow, how do I force new lessons, get more reviews?”. A few months later they come back with a post of “Drowning in reviews, how do I slow things down” 
I was feeling bogged down by reviews so I just stopped doing them 
Seriously though, the biggest hurdle in learning something like Japanese is simply keeping your motivation high enough to keep studying. So if kanji is feeling like a chore, then study grammar, practice reading, or something like that instead.
I also try to keep my Apprentice number at around 50, I think it works well for me. If I get into the 60s or 70s, I can’t always keep up with my reviews. In a way, not having a whole lot of time for WaniKani might actually help me in the long run.
If accuracy is the concern, Review Analytics breaks down SRS stage performance so you can spot problem areas. Install: WaniKani Review Analytics GitHub: bimapopo345 (Bima Prawang Saputra) · GitHub