Trying outline with Shader Graph 2020 causes weird glitchy effect

I've been trying to work in Shader Graph, and while I was able to make some decent effects in earlier versions of it, I'm trying to make a 2D outline now based on Brackey's video (https://www.youtube.com/watch?v=MqpyXhBIRSw&t=2s&ab_channel=Brackeys), but the different master node(s) is making adaptation difficult. Instead of a regular outline, most of my sprites with the shader have weird glitchy edges like this:

I've been looking for answers everywhere, but almost everything is based on the older version of Shader Graph. I get the feeling that the issue may be some sort of stretching issue, but I can't figure out how to fix it.

Below is the full shader graph, minus the bit used to make the outline (it's pretty much the same way Brackeys did it). Any advice would be fantastic.