My latest 5e campaign (set in Damara/Blodstone Lands, 1359 DR) is a multi-group sandbox game which started in August 2020. I use standard 5e XP with a lot of lower CR monsters, which gives a rather sedate advancement rate. Currently PCs are in the 3rd-6th range (I currently start new PCs at 3rd). In order to keep the progression rate about the same and allow for long term play, I'm planning to halve XP awards for PCs at 11th+ level. I was wondering if anyone else has done this and how did it work out?