After the world ended you found out someone, (a rich person) made a copy of the internet before the end. (reason not important)
What is more believable:
1 - she has a massive 10-lvl subterranean basement, full of data drives holding all 100+ zettabytes. (100 trillion gigabytes)
2 - she has some secret storage format that rich people can buy but the public doesn't know about, so it's just 10 to 12 Rack towers.
You will also understand that "Realistic" bullet drop/recoil should have stayed in Battlefield-ip and not have been propagated everywhere like now in all FPS