changed picom backend to xrender

.config/picom/picom.conf

@@ -213,8 +213,8 @@ blur-background-exclude = [
 # Specify the backend to use: `xrender`, `glx`, `egl` or `xr_glx_hybrid`.
 # `xrender` is the default one.
 #
-backend = "glx"
-#backend = "xrender";
+#backend = "glx"
+backend = "xrender";
 
 # Use higher precision during rendering, and apply dither when presenting the
 # rendered screen. Reduces banding artifacts, but might cause performance