Maybe it will help - my friends played in pair without lags (one had mosin, second had m4, both unpainted) When i joined and approached them, one of them and me start lagging like described above. I had m4 with buis, magpul butt and handguard, all painted in green. Therewith, textures of buttstock and handguard are flickering, and some textures (of beans, waterbottle, medkit, ammobox, TTSKO jacket, and some more) won't load at all. But at start, game run even better that before.
My pc is quite a crap, but before 0.34 game runned quite good:
- AMD Athlon 64 x2 5200 @ 2.7 Ghz
- 4GB DDR2 RAM
- Nvidia GTX650 2GB (latest drivers)
- Win 7 64 bit
UPD - My mate said that problem fixed for him, after he dropped sks for mosin
UPD2 - For me, problem dont depend of whether other players nearby.
excuse my english - i'm from russia ;)