Slow scss

I love custom css but it is slowing down my site, this query

<link rel=”stylesheet” href=”http://yoursite.com/?sccss=1&#8243; />

Takes 1.6 seconds, is there a fix planned for this, I saw others had the same issue that posted a year ago but there was no response

https://ww.wp.xz.cn/plugins/simple-custom-css/