Using picom-git. Standardised on GLX as it seems to be playing nice

with M27Q.

picom/picom.conf

@@ -7,9 +7,9 @@
 #
 #################################
 
-# Backend to use: "xrender" or "glx" or "xr_glx_hybrid".
+# Backend to use: "xrender" or "glx".
 # GLX backend is typically much faster but depends on a sane driver.
-backend = "xr_glx_hybrid";
+backend = "glx";
 
 #################################
 #
@@ -189,12 +189,12 @@ vsync = true;
 
 # Enable DBE painting mode, intended to use with VSync to (hopefully) eliminate tearing.
 # Reported to have no effect, though.
-dbe = false;
+#dbe = false;
 
 # Limit picom to repaint at most once every 1 / refresh_rate second to boost performance.
 # This should not be used with --vsync drm/opengl/opengl-oml as they essentially does --sw-opti's job already,
 # unless you wish to specify a lower refresh rate than the actual value.
-sw-opti = false;
+#sw-opti = false;
 
 # Unredirect all windows if a full-screen opaque window is detected, to maximize performance for full-screen windows, like games.
 # Known to cause flickering when redirecting/unredirecting windows.