Rotating the tank while in the aiming state causes stuttering

"Rotating the tank while in the aiming state causes stuttering, but it works normally at other times. This has persisted for several versions. Is this a problem with the game program or did I configure something incorrectly?"BUG video

When using the vehicle length observation system, rotating the vehicle body causes the grass in front of me to vibrate while the distant image remains stable.

I always thought this was normal, is it not?

I was playing type90 recently, which had a really bad gun scope that almost made me vomit, and my friend told me that the game screen was smooth when he did that, so I had to reinstall the game to see if it could be fixed.