RSS Feed Content Not Generating Properly?

I'm trying to use the following RSS Feed; https://www.pcgamer.com/uk/rss/ and trying to get the tag <content:encoded> to display is just not working. If I choose Full Article Content, then I end up with a bunch of credit and URL's at the beginning of the article. But I cannot seem to pull out via the custom tags, just the content of <content:encoded>. Please help me? This plugin is doing absolutely everything else I wanted from it, I just cannot suss out the content issue. If I leave it as defaults with "Generated Post Content" as %%item_content%%, it is pulling out the information within the <description> tags, not the content.