Yes, ARMA III performs well.
Yes, ARMA III performs well.
I can assure you that if you played on a server with low performance, it likely meant the mods weren't optimized or there were many players. On hardware setups, Arma III runs best on a Ramdrive or enterprise SSD. The CPU is important, but I've played Arma III on an i7 950 for over 900 hours without any issues. It might run better, but I haven't had any complaints due to the enjoyment I've gotten from it. Now that I have a 4790K, it's incredible!
I also doubt the game's assertions since it only uses one core initially, yet it has a hyperthreading option in the launcher—definitely suggesting more than one or two cores are being used. On my CPU, utilization across all cores remains fairly balanced even when ARMA 3 is active; any drops happen only when I exit the game, indicating the issue was likely from the game itself rather than external factors. Please don't take this as a confirmation that Arma will always run at 60 FPS. It actually needs improvements in optimization. Still, it's not completely unplayable.
Search for Arma 3 performance problems online. You’ll find many reports of issues. I haven’t personally experienced anyone running the game smoothly at 40+ FPS in every situation. I doubt these people are reliable, and I recommend checking the official sources instead.
I won't dive into a debate about this. As I mentioned, optimization isn't the strongest here and falls short, while server setup isn't ideal either. Too many items on the map hurt performance. Playing Wasteland won't help you get better results than playing Altis. Performance varies a lot depending on the mission, but if you search for Arma III reviews online, you'll see many negative comments about speed issues. However, the gameplay is amazing!