Is it slow to call c# script from uvs?

I use c# extensions by calling public static method from uvs, like
public static float GetPositionX(this Transform target) => target.position.x;

Definitly it’s convenient than custom nodes, especially with 3rd party tools like DoTween.

Are there any performance issues than custom nodes?

Thanks!

When I checked a year or so ago, they had a much higher latency than custom nodes (10x slower?) Static functions may be faster than class types though since less reflection is involved.