(hopefully) fixed screentears

i3/.config/i3/config

@@ -23,7 +23,7 @@ font pango:VictorMonoNerdFont SemiBold 12
 ###################################
 
 # start compositor and polybar, etc.
-exec --no-startup-id picom
+exec --no-startup-id picom -b
 
 # clean up and start polybar
 exec_always --no-startup-id killall polybar

picom/.config/picom.conf

@@ -24,6 +24,8 @@ rounded-corners-exclude = [
 ];
 
 # general
+backend = "xrender";
+vsync = true;
 use-damage = true;
 xrender-sync = true;
 xrender-sync-fence = true;