Exploring around the Xbox (beta) app for a long while, I found it curious how scroll performance eventually tanked. By the time it became barf worthy, I noticed that one of the processes in its group was marked as around 2 GB. It also persists across coding and opening the GUI.
Exiting the system tray reduced it to about 2~3 something MB for the process group in taskmgr. Playing around, it looks like shifting between the list of games in category view and opening them for the detailed store view causes memory to go up, and be largely hung onto after returning to the list.
Ahh, the joys of memory leaks: and the reminder that even Microsoft ships more than a few bugs. For the Xbox used for Game Pass, at least is flagged as beta quality. Even if it looks like a resource sucking monster compared to something like Valve’s Steam client.