Enabled several recommended glx options in picom.

picom/picom.conf

@@ -29,12 +29,12 @@ glx-copy-from-front = false;
 # My tests on nouveau shows a 200% performance boost when only 1/4 of the screen is updated.
 # May break VSync and is not available on some drivers.
 # Overrides --glx-copy-from-front.
-# glx-use-copysubbuffermesa = true;
+glx-use-copysubbuffermesa = true;
 
 # GLX backend: Avoid rebinding pixmap on window damage.
 # Probably could improve performance on rapid window content changes, but is known to break things on some drivers (LLVMpipe).
 # Recommended if it works.
-# glx-no-rebind-pixmap = true;
+glx-no-rebind-pixmap = true;
 
 # GLX backend: GLX buffer swap method we assume.
 # Could be undefined (0), copy (1), exchange (2), 3-6, or buffer-age (-1).
@@ -195,7 +195,7 @@ 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 = true;
+sw-opti = true;
 
 # 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.