Banding issue with Gaussian Blur

Whenever i export a lottie, i see that the shape where i used Gaussian Blur is artefacted/banding and shows low quality shapes where ugly stripes can be seen… I have tried setting it to 16-32 bit and it still shows the same issue. Anyone that can help me? I have not found the solution or i don’t know what this issue is called.

Screenshot by Lightshot (example)