Issues loading into match

So whenever I turn my computer on and play Fortnite Battle Royale, the first match takes an unusual long time to load into. Also get low FPS when landing (once it finally loads).

Then all the next matches load perfectly at 60FPS. I guess lowering the quality would make it better, but as I say, it works perfectly the rest of the matches.

I guess it has to do with loading all the items in the map and once they re loaded it works fine, but is there any way to load the map before getting into a match? Or at least is there a creator-made island with exactly the same map as Battle Royale so I can go afk in there so I can play Battle Royale after?