I have Ryzen 5 3600. 16GB DDR4 RAM and a GTX 970.
Having similar experience when arma 3 launched. some 30 fps at times, tough it does seem to run better, after I turned most lightning and draw distance to around 3km is ok.
I do look in the distance sometimes and think "Ohh that must look pretty on decent GPU"
But overall still playable around 40 - 60 fps
Any suggestions what GPU I could get? im in UK. would prefer used from ebay but better with budget around 300 pounds.
Edit: Kind of went and searched the options and I think I will try to snipe a gtx 1080 ti below 300 pounds.