I found that when you lay down as opposed to standing up or crouching, your shots go about a block up from where they are supposed to be shooting. In the video I shoot while standing up showing the guns accuracy normally and then while laying down and you can see that the bullets are pretty far off.

(Video is inside of the ZIP, couldn't upload the MP4 itself)
2020-11-15 12-22-41.zip

It's tested with the M4 in the video but I tried with a few other weapons and it seems to be the case with them all.

@Afarion1 It seems this issue only occurs if the trigger is held down. If you do single click shots, it hits the correct position. Even if I reduce the fire rate of a gun in order to mimic doing single click shots, the issue still occurs.