I’ve ran into this issue a couple of times, here is what I did to fix it, and was usually always one of the problems.
While Loops
First off, this could be an error because of a loop is going to fast that is infinite (or goes on for too long) and lags Roblox, so Roblox throttles.
It’s a good practice to do the following when making while loops, here’s an example:
while wait() do
-- LOOP
end
If you’re struggling to find the loop, you can most likely look in the logs, if they don’t show I recommend searching using “FindResults” in the “View” tab of studio.
Search for the following in ALL scripts: “while”
Roblox
This error could just be Roblox having some issues, in that case, I’d recommend taking a break for a bit and it may resolve itself, if it’s constant, I recommend contacting Roblox about it.
Invalid Texture,Image,Sound Ids
This has happened to me on multiple occasions. Invalid IDs can sometimes delay things, I recommend reducing those kinds of errors.
Big Scripts
Big scripts such as Adonis Admin, and maybe F3X can potentially cause this error when you’re game is quite large. I recommend either making your game smaller or removing these scripts and trying other ones.
Accidently Modifying Core Scripts
As some people stated above, accidentally modifying core scripts or even worse, putting in a script that modifies them can cause this kind of error.
If you find yourself wanting to edit/replace any of these scripts I highly recommend you Disabled them, and then create one in the place of them to avoid any conflicts.
Connectivity Problems (Your Connection)
If you’re on studio especially, this type of error can happen by your internet going out at the same time you play the game and load the player, character, and GUIS.
