IMO:The minor/slight wiggles you are getting in the middle of the frame at 1.47 + are possibly noise from the electronics of the Plus, and/or your blades are needing a tad touch up on balance as they are going in and out of phase, possibly causing a slight and intermittant mechanical resonance as they do that.
I had one of my P2V's that would get hazey bars across the image, that would move up and down with a change in the speed of the motors, but only when there was a lot of light in the frame.
I could reproduce it by setting the lens cap on, pointing in the general direction of he sun (not straight at it) and with the props off, just runing the motors up and down would cause these translucent hazy bars to move up and down in the viddy frame.
Although I think that it may have been just the result of the way all the parts married up in that particuar P2V, I din't like it so I returned it for a replacement (Amazon).
If yours always doing that irrespective of what bades you use, gets worse, and/or just bothers you .... see if you can exchange it for another one through you dealer.
If the reports of DJI's CS are any indication, trying to get anything done through DJI is a long wait and then may or nay not end up being better.
On edit: Just saw bird's suggestions ... all good ..... so give them a try before you give up on it.