fix: workaround high frame skip when loading resources

It'll need a proper fix, but if the game is going under 15FPS,
make delta time to 1/15 second, in order to be sure that it'll simply slow
that frame and not skip a whole transition for instance

sonic-radiance.love/core/init.lua

@@ -89,6 +89,8 @@ end
 -- Load every sytem every update functions of the scene and objects
 
 function CoreSystem:update(dt)
+  -- If the frameskip is to high, prefer slowdown to frameskip
+  local dt = math.min(dt, 1/15)
   self.debug:update(dt)
   self.input:update(dt)