Bump,
Same problem here.
I can play for 30 to 45 minutes max (on multiplayer) and my FPS will drop from 45 to 15 and swap up back and forth between 10 and 30 the entire time untill I do a full restart of the game.
Game was stable for alpha and late beta for me, now it's complete crap in performance.
All threads I can find online are of the alpha or beta and nobody else seems to be having this problem, plus I'm getting absolute minimal response from BI or Tech support and find it, to be frank, rather disgraceful.
I've been measuring my CPU and GPU usage, so far I can tell you they're not to blame.
GPU usage stays under 40 to 50% at all times, I even tried without SLI and it doesn't change anything, temperatures remain below 50 degrees.
CPU cores all stay at EXACTLY 38 degrees, only to peak to 42 when there's 'A LOT' going on, while their load varies with core 1 having around 20% and the others not even making it past the 5% mark at any time.
Memory doesn't appear to be doing at all and it's only assigning a maximum of 1.6 GB's to the game, which it never seems to use at all.
System doesn't show ANY changes when the massive FPS drop kicks in EXACTLY 45 minutes after starting the game.
CPU is unparked
No extra launch options have been used, since these have been INVALID SINCE ALPHA for me and most other players on my server.
Only other program is Teamspeak running in the background.
Windows 7 Ultimate 64-bits (6.1, build 7601)
NVIDIA GeForce GTX 260 (SLI, total 4068 MB VRam) (Commodore Custom)
Driver version 9.18.13.2723 (LATEST)
Intel® Core i7 CPU 920 @ 2.67 (8 CPUs), overclocked 10%
8192MB DDR3 1066 MHz Corsair 3-slot memory (Commodore Custom)
Dual Samsung HD502IJI 7200 RPM SATA (1 TB total) (200 GB available total, of which 50 on C: drive)
Pagefile 16 GB, 5 GB Used during gameplay
Standard Big-fan cooling set, can play games such as Metro LL and Battlefield 3 with 64 versus on ultra without getting the GPU higher than 70°C and the CPU 55°C
Furmark extreme shows no problems after 4 hour testing
Prime95 shows no problems after 12 hour testing
Memtest shows no problems
Any information would be appreciated.