You have to toggle F3 off and on, DO NOT BUILD WITH IT ON OR YOU WILL CRASH!
I usually make like 10 storages, turn it on, then off. use all my resources, turn it on again, then off. It's easy. sometimes I forget and it crashes but you'll get used to it. MAF might fix that though.
Al though I do love the unlimited Super weapon/Anti super weapon. NUCLEAR POWAHHHHHH!!!
just in case? Oh cmon there's nothing funnier than nuking their refinery and groups of units. *cough* okay maybe I'm a bit power hungry with the nukes.
Also the F2, I wouldn't use atm right now. It affects the enemy AI and I got CRUSHED by 70 units within 5 minutes from the start of the game. maybe wait 15-20 mins before using it but again, I wouldn't use it. It still makes them build like crazy. Again, MAF might fix that.
Now the F1. I usually turn it on once and then off. You get over 99k so you just have to do it once or twice in the whole game. Not a big deal. Not sure if it crashes game if you leave it on though (obviously I left it off lol) annnnnd you know what I'm gonna say.... MAF Might fix that.
Also can I add an suggestion? Maybe add inf health? It would help a lot against the F2 bug anyways and who doesn't want Inf health SEALs?
*orgasms* or the SAS sniper that basically kills vehicles *drools*