This game runs extremely slow with high frame rates.
This game runs extremely slow with high frame rates.
As you mentioned, Arma 3 isn't highly optimized and your CPU performance is somewhat limited.
Despite a slow CPU, the issue mainly stems from how poorly Arma 3 performs compared to other games. AC Unity works much smoother, helping you see the difference. On my machine, I still have trouble achieving good frame rates, which is mainly due to low hardware usage.
Improving distance and shadow rendering boosted my performance noticeably. Your card performs slightly better than mine, which might mean the game runs poorly on weaker CPUs. Arms 3 is notorious for lagging on most PC configurations. I’m seeing 30–70 FPS (around 30 when everyone spawns close together) at 1600x900, though I can’t play full screen because I often switch tabs. I’m using high settings, but they might not be optimal—possibly not the best benchmark. Battlefield 4 is clearly superior and highly optimized, so I wouldn’t suggest using it as a direct comparison for Arma 3.