Mouse double left click problem

Hi, Thank you all for this wonderful emu.
I am using RPCS3 to play Demon souls.
Great game and RPCS3 is amazing.
I use keyboard+mouse to control.
By using UCR(Universal Control Remapper: https://autohotkey.com/boards/viewtopic....mp;t=12249)
I can use mouse to control like a PC native game.
But just one problem.
Mouse double left click is hotkey of fullscreen in RPCS3. This make mouse attack is impossible.
And i cant find anywhere to modify this hotkey.
Could you teach me how to change the fullscreen's hotkey to another?
THX alot