Open Geometry Dash with MegaHack installed
Open the MegaHack menu
Find the speed control option
Use the speed slider or hotkeys to adjust the speed
Set the speed to your desired value
Close the menu and play with the new speed
Open Geometry Dash with MegaHack installed
Open the MegaHack menu
Find the speed control option
Use the speed slider or hotkeys to adjust the speed
Set the speed to your desired value
Close the menu and play with the new speed