Yeah it started to feel that way towards the end of the last season of the 100 for me. Just kinda felt like more of the same and like I was only watching it to finish lol.
Any anime that has good plot but it's just a lot of talking at the start then I feel like I'm forcing myself to watch the show.. Sometimes I get through it sometimes I just can't and drop it temporarily, maybe I'll get back to it a year later hahaha
Honestly Suits was that for me. I loved the first season and even enjoyed the 2nd,but I felt like there became a point where it needed to end and was getting repetitive.
it happens to me when i try to watch a show over 3 seasons, the show starts out good but gets boring it happened to me when i was watching preacher and mushishi