Practice serve speed inaccuracy?

Has anyone else noticed serve speeds vary depending on near or far side of court? I have searched the community and haven’t found any other posts in this regard.

Attached are screenshots of my serve speeds from SwingVision. The first half of each set of serves are on the near side of the camera and the second half of serves are taken from the far side. On the far side I am hitting some serves at 130mph, while on the near side the fastest serve is 90mph.

Just wondering if I am doing some wrong? My guess is that my actual serve speed is closer to the near side speed.

Anyone else seeing this?