Thanks for trying out the game! Odd issue, is the first time I heard about it. Try updating your gpu drivers. If that doesn't work try manually erasing your save files. Go to "C:\Users\<your username>\AppData\Roaming\Godot\app_userdata\Poke ALL Toads" (replace C with the hard drive where windows is) , make a backup of the files inside and erase everything inside the folder.
If that still doesn't work, do you have anything running apart from the game? There might be something causing a conflict.