I implemented sliding sync for poast matrix a month ago. I used ElementX for that month, it's literally unusuable and it's been in development for almost 2 years. so I found matty on the element subreddit and added my opinion

https://i.poastcdn.org/6ac42f30d9581bbc48138144a52069f5c20cf458d86f9a1fe0e3dacc08e6ff4c.png 

 I don't really understand what this means, but I hope you have a good Graf morning!