bumps the default fps (#4297)

the default fps of 20 is literally so ancient it's terrible for npx when
everyone else is smooth to begin with nowadays

doesn't really need a changelog because it only applies to players
without a savefile

code/modules/client/preferences.dm

@@ -42,7 +42,7 @@ var/const/MAX_SAVE_SLOTS = 10
 	var/warns = 0
 	var/muted = 0
 	var/last_ip
-	var/fps = 20
+	var/fps = 60
 	var/last_id
 	var/save_cooldown = 0 //5s cooldown between saving slots
 	var/reload_cooldown = 0 //5s cooldown between loading slots

interface/interface.dm

@@ -76,7 +76,7 @@
 	set name = "Set FPS"
 	set desc = "Set client FPS. 20 is the default"
 	set category = "Preferences"
-	var/fps = tgui_input_number(usr,"New FPS Value. 0 is server-sync. Higher values cause more desync. Values over 30 not recommended.","Set FPS", 0, MAX_FPS, MIN_FPS)
+	var/fps = tgui_input_number(usr,"New FPS Value. 0 is server-sync. Higher values cause more desync.","Set FPS", 0, MAX_FPS, MIN_FPS)
 	if(world.byond_version >= 511 && byond_version >= 511 && fps >= MIN_FPS && fps <= MAX_FPS)
 		vars["fps"] = fps
 		prefs.fps = fps