The issue you are experiencing is likely due to the fact that the physics engine in your game is not designed to handle time dilation beyond a certain point. While you can speed up the game world using the Set Global Time Dilation function, the physics engine may not be able to keep up with the increased speed.
To fix this, you may need to adjust the physics settings in your game or find a physics engine that is designed to handle higher time dilations. Alternatively, you could try slowing down other aspects of the game, such as animations or AI behavior, to bring the overall speed of the game back down to a manageable level.
Another solution could be to create a custom physics system that works in tandem with the Set Global Time Dilation function. This could involve creating a separate physics engine that is designed to handle higher speeds or modifying the existing physics engine to handle higher time dilations. However, this is a more advanced solution that may require significant programming expertise.