Lags are annoying i agree, but in all honesty please don't forget that NF runs from an us server, where all players play at. Comming from asia, europe, australia, south-/ north america, africa, arctica and from whereever else. It is a wonder that such a old game is mostly running without further issues of lags.
Certain things won't and can't be changed. I'm somewhat happy that there is some sort of 'anti-lag' system implemented in NF. Imagine there wouldn't be such a thing and all not US players had a delay of ~0.2-0.4s... Game would be surely not half as "active" as it is right now.
Fixing crashes is a different topic and needs to be looked at. Still, after all the years i'm not expecting miracles now and in future considering this issue, eventhough it would be nice to have a fix.
Ohh.. and this counts just for me: After i bought my new pc with new OS (xp => win7) i'm experiencing WAY LESS crashes than before. Now I never crash at the beginning of battle, very seldom it crashes randomly in game after ~3-5mins.
Regards