Only load csg1 if necessary

src/openrct2/drawing/sprite.cpp

@@ -629,6 +629,11 @@ extern "C"
         {
             return &_g2.elements[image_id - SPR_G2_BEGIN];
         }
+
+        if (_csg.data == nullptr)
+        {
+            gfx_load_csg();
+        }
         return &_csg.elements[image_id - SPR_CSG_BEGIN];
     }
 

src/openrct2/rct2.c

@@ -163,7 +163,6 @@ bool rct2_init()
 	if (!gfx_load_g2()) {
 		return false;
 	}
-	gfx_load_csg();
 
 	font_sprite_initialise_characters();
 	if (!gOpenRCT2Headless) {