It was previously a flat curation curve from where went to non-flat curve. Simple change would be increasing the window and testing out how it works, than discussing a big change like change the whole curve. Let's give non-linear curve some variability and see may be it will perform well.

I got for anything between 6 to 12 hours.

But do note that previously this window was 30 min, reduced to 15 and then to 5min I guess. The longer is the window, the longer you may have to wait to get the balanced scenario. But it is always worth trying.

You can't make everyone happy at same time. :)