remove sync, gtk4 bugs

picom/picom.conf

@@ -1,10 +1,6 @@
-backend = "xrender";
 vsync = true;
 use-damage = true;
 
-# games bypass picom entirely when fullscreen
-unredir-if-possible = true;
-
 # no effects — featherweight
 shadow = false;
 fading = false;
@@ -13,3 +9,11 @@ corner-radius = 0;
 
 detect-transient = true;
 detect-client-leader = true;
+
+unredir-if-possible = true;
+# xrender avoids picom creating its own GL context, which conflicts
+# with GTK4/WebKitGTK apps (e.g. Stremio) using their own GL context
+# on NVIDIA — that conflict was rendering such windows transparent.
+backend = "xrender";
+
+