Latest github version still duplicating feeds

Hi there,
Is there a fork of this plugin available that actually works without loading all the feeds all over again every intervall? The latest github version I could find (1.6 – https://github.com/cuny-academic-commons/external-group-blogs) still has this issue. This is an awesome plugin to aggregate information from different sources on a group page. I really would like this to work somehow. Is someone able to fix this?

Thanks!

https://ww.wp.xz.cn/plugins/external-group-blogs/