Ive also got a bit of stuttering from this patch (14305). The last beta patch (14214) worked very well, next to no stuttering, and i was even able to enable cockpit and ground shadows.
I'd backed up the old patched version, and did some swapping between this and the lastest beta version to see wat could be causing these new stutterings. One thing i did notice was the rendering of the trees compared to the last patch, and i think this might be contributing. If someone else would like to check this... just so i dont think im bonkers
Patch (14305) - I zoomed in and watched wat was happenng and noticed with the new beta at a further distance they appeared in blocks and as they rendered whn u got closer, it seemed to be timed with the slight stuttering. It also appeared to do it as distant land was poping up.
In the last beta patch (14214) i didnt see the stuttering as trees and land was appearing.
I also noticed some buildings such as a few hangers doing the building pop-up stutter, but doesnt happen very often.
Clouds, SSAO, land shading and land detail still cause the most reduction with fps on my system across all the patch's. Everything else is able to be run at full.
Another thing id like to point out, dont know if its been mentioned or not, but looking directly forward out the cockpit causes a 8-10fps loss.. anyone else notice this?