I just got into it with the second batch. I have had an account for years, but just missed the first batch by 1 day last week. I have only been able to play for about a total of 2 - 3 hours or so, but I can tell you this that I play @ ~30fps or so on average with the system you see in the sig running @ 1680x1050 with no AA, and medium quality settings. The beta is programmed extremely well as I run 30 FPS and there is no stutter or mouse lag. It runs quite smooth and the server lag is minimal to none so far. I am far more impressed with this beta over the 2 different beta's of enemy territory quake wars. ETQW does not look as good and is on a smaller scale as far as Multi goes and yet with its poor programming stuttered on my comp even when I had higher FPS than I have in Crysis. The sniper has great range, and the suit and weapon upgrades are simple to use as well as quite fun as well...I love the cloak. The game mode is somewhat of a mix between a BF2 and RTS mix. You take objectives in order to gain strategic advantages and technological advances in your ultimate quest to (what I think you are trying to do in the end anyways) is destroy the opposing teams base. So in this game mode it isn't the cliche of DM that some people had first said it was from the few videos that we saw on the web. Hopefully this is something like what you were wanting...if there are any questions you want me to try out in the game then I will happily do so and answer back when I can.
P.S. I would really recommend getting a FP account. I have had one for 3 years now paying like $6.50 a month or something like that after tax and i have gotten into probably over 50 beta's that I have played and had to opportunity for more as well as access to files first in many cases and never have to wait in line for the high speed servers that I can download @ 1mb/s on average, which is nice...atleast for me it is! lol
Best,
3Ball