When SVG is resided within two <div>, first one with position relative, the second with position absolute, the SVG drag object lags behind the cursor when the outer <div> is scaled bigger to fit the window. See the sample in CodePen. If the div is scaled smaller, the SVG drag object moves faster than the cursor. This problem exists in Mac Chrome, no such issue in Mac Safari or Firefox, not sure the same problem exist in Windows Chrome, IE, and Edge.
To test the above, please open up the window display area much bigger or much smaller than 800 x 600.