I’m all for hating on corporations but did you even read the article? This is completely on the UK government. Not apples fault and I’d much rather they stop offering the service to UK customers (which they did) over putting a backdoor in

Have you tried running the game without the patch?

What version of wine/proton are you using? I believe newer versions of proton do what that 4GB do by default. I think it can also be forced in proton using PROTON_FORCE_LARGE_ADDRESS_AWARE=1 but it should be on by default.