[megous]

There were some shader caching patches mainlined recently to mesa, I think, and some improvements went to gtk4, too.

https://www.phoronix.com/scan.php?page=news_item&px=Mesa-Lim...

[seba_dos1]

Pretty much nothing in phosh (aside of small amount of third party apps since very recently) uses GTK4 yet, and GTK3 did not use mesa at all.