motion keyframes not working properly

The motion tracking with my keyframes is not following a continuous, smooth path between keyframes. I've noticed this problem a lot when I try to keyframe motion, scale, and do time remapping to the same clip. Right now I'm just key framing the scale,  motion, and exposure and having same issue. Basically, the height is at 347 for the first key frame and then a second keyframe 10 frames later is also at 347 but in between it goes to 348 then back down before the next key frame. It does this in smooth motion (347.1, 347.2,......347.2, 347.1, etc). This happened after I manipulated other keyframes later in the clip. I'm working on a 45 second Mountain bike clip from a go Pro on a bike follow camming the subject. The clip is nested, and I applied warp stabilizer inside the nest, so I could motion track the nest. When I make adjustments to the keyframes at the end of the clip it will make changes to the keyframes at the beginning of the clip.