Can this be right? 18% FTP increase?

As and update… Since my FTP test I have real trouble nailing workouts. My resting HR is 10-15 beats over what it’s supposed to be. I had to reduce taylor-2 intensity by 10% finished the last set at 92%. Did taku yesterday it felt like tempo. Today I tried my luck at Donner. Within the 2 minutes at treshold my HR went to 155. And for the first interval within 4 minutes my HR went to 174 LTHR is about 162-168. I tried reducing the intensity to 93%. And didn’t finish the first interval and bailed out.

I’m not sure it’s my FTP set too high. It much more feel like I’m fighting something. What do you do in those situation?