during my cheat engine scan i found two permanent memory addresses (it was green colored address) for decals size

but if my addresses don't work you can do 4 byte unknown value scan and then increase and decrease the size of the decal and use value increased/decreased and you will end up with something

1 row decal
aces.exe+1FE7B78

2 row decal
aces.exe+1FE7B80

but to the disappointment when i entered a fight. all my decals were reset to default size