You can write your topic however you want, but you need to answer these questions:
What do you want to achieve? Keep it simple and clear!
Spawns to properly spawn you on them under y level -500.
What is the issue? Include screenshots / videos if possible!
When you place a spawn under -500 even if you change FallenPartsDestroyHeight below -500 you will spawn at -500 no lower even if your spawn is down there.
What solutions have you tried so far? Did you look for solutions on the Developer Hub?
Yes I looked for solutions none were found. I have tried changing FallenPartsDestroyHeight even more but nothing as worked and I don’t want to move my spawn.
(Yes I know this isn’t really scripting but I don’t know where to put issues with Roblox Studio at so maybe someone could help maybe some teleport to that spawn point if you spawn at it script or something like that.)
First, why would you ever need to have a spawn be at Y -500??
Second, I don’t think there is anyway to fix it other than moving the spawn up.
You may want to teleport the Player Character when they join to a part down while keeping the spawn at a much better Y level.
Go to workspace > Change the fallen parts destroy height to something like -50000. It will work then. It won’t spawn bc the player would instantly die due to the fallen parts height.