Same exact problem, but mine picked up when I installed the 1.3 gb patch this morning. Just earlier this morning before the update, I was perfectly fine. However, I've been having a persistent crash problem with my .dll files. Previous to this patch, I had to clear my .dll folder to prevent a crash 10 minutes into gameplay. Now, if I keep my .dll files I can barely load into a server before I crash. However, keeping my .dll files clear seems to now have caused the ~4 fps problem instead of crashing.
Hey there folks, I've made a bunch of Arma 3 videos in the past as well as on a few other games. Occasionally I put out new stuff, depending on how much I play. Hopefully everyone here enjoys my content.
https://www.youtube.com/channel/UCCuGJAATo1FLbj6-HPEpkVA
Remember to read the information sections for details on the videos and feel free to ask questions or comment!