Having the same problem. In TPS (F2 third person) mode having 60-70 FPS, but in FPS (cockpit boresight) it drops around 40's. Im looking at same spot. Not using VR.
Viper has some optimization problems it seems. I'm getting bad FPS too. Hornet is just fine. Map should be on by default, you can enable it by pressing mode and map.
Same here, regardless what plane you using JDAM is missing certain targets, i've tried another target and it hit successfully.
There is a track but its long.
It was dived like that. Jsow doesn't seem having the same problem. A10C JDAM Bug .trk