Allow Noteskins to control by Snap, restricted by a Preference

see comment within

Themes/_fallback/Languages/en.ini

@@ -395,7 +395,7 @@ FailOffForFirstStageEasy=If enabled, the first stage will be considered Fail Off
 FailOffInBeginner=If enabled, beginner will always be considered Fail Off.
 FastLoad=If enabled, don't check songs for changes on load.
 FastLoadAdditionalSongs=If enabled, don't check songs for changes to Additional Songs on load.
-FastNoteRendering=If enabled, the z buffer is not cleared after every note.  This causes 3d noteskins to collide, but substantially improves performance in gameplay.
+FastNoteRendering=If enabled, the Z buffer is not cleared after every note. This causes 3D Noteskins to collide, but substantially improves performance in gameplay. Disabling also enables some extra Noteskin features.
 Fill Machine Stats=
 FullTapExplosions = Toggle whether to play the full tap explosion animation on taps. Short means that they instantly end when you release your tap.
 Game=Change the current game type with this option.

src/Etterna/Actor/Gameplay/NoteDisplay.cpp

@@ -216,10 +216,17 @@ MakeNoteResource(const RString& sButton,
 	NoteSkinAndPath nsap(
 	  NOTESKIN->GetCurrentNoteSkin(), sElementAndType, pn, gc);
 
-	Color = "4th";
+	/* In its current state, the color feature here produces 9 times the actors
+	 * we want. Anyone curious: That makes it 24x4x9 vs 24x4.
+	 * This drops Gameplay FPS by several hundred, albeit uncapped and
+	 * above 1000fps. Regardless, almost everyone doesn't care about this.
+	 * By this logic we can cripple/disable the feature by doing this instead.
+	 */
+	if (PREFSMAN->m_FastNoteRendering)
+		Color = "4th";
+
 	map<NoteSkinAndPath, NoteResource*>::iterator it =
-	  g_NoteResource[Color].find(nsap); // i cant figure out how color changes
-										// what actors are loaded... -mina
+	  g_NoteResource[Color].find(nsap);
 	if (it == g_NoteResource[Color].end()) {
 		auto* pRes = new NoteResource(nsap);