subsystem changes (#5332)

1. de-tickers basically everything that doesn't need to be a ticker (so
most of them)
2. makes SSdpc not awful (thanks @Lohikar)

---------

Co-authored-by: silicons <no@you.cat>

code/controllers/subsystem/processing/projectiles.dm

@@ -1,9 +1,9 @@
 PROCESSING_SUBSYSTEM_DEF(projectiles)
 	name = "Projectiles"
-	wait = 1
+	wait = 0.25 // scale up to 40 fps
 	stat_tag = "PP"
 	priority = FIRE_PRIORITY_PROJECTILES
-	subsystem_flags = SS_NO_INIT|SS_TICKER
+	subsystem_flags = SS_NO_INIT
 	var/global_max_tick_moves = 10
 	var/global_pixel_speed = 2
 	var/global_iterations_per_move = 16