Given OneShot’s nature, just closing the game becomes a hassle when repeated often, especially if you’re testing a long cutscene and need to cut it in the middle.
You can use the task manager, a tool like SuperF4, or just this script to kill OneShot quicker:
taskkill /F /IM oneshot.exe
On the Script Layer, you could have the game check if you’re in debug mode when attempting to close the game for a quicker shut down, skipping all the checks and prompts.
On the Engine Layer, you could include a key bind to kill OneShot if you’re in debug mode.