The player starts in Sapphire Mountain are placed in specific spots that makes the game be unable to determine which waypoint players are on.
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Because of this, all CPU players won't start racing until 4 seconds after the "GO" signal.
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In addition, it results in a bug where as long as a player remains on the starting area and never leaves the area at any one point, all other players will be one place lower than expected. This also causes the Item/Ring Box roulettes to malfunction since no one is in 1st place - roulette speed and item/ring payouts are as if the player was in 1st place.
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Also, found an issue with the filename prefix.
DR is only to be used if there are only race maps, but there are also battle maps, Lua scripts and special stages in this pack, so the correct filename prefix should be
DRBSL.