SVG render speed is very slow

[008v]

https://github.com/008v/SVGChangeColor/tree/scrollView
branch: scrollView

Above is a project I wrote to change the color of SVG.
It scales based on the UIScollview.
When you zoom in, the frame of the MacawView will change.
Tap on a path in SVG will fill with the gradient.
Unfortunately, the larger the frame, the slower the rendering.
Is there any good way to optimize the rendering speed?

[ystrot]

MacawView has built-in zoom feature with good performance which should resolve this issue.