I updated my computer, with old setup there was not any stuttering in multiplayer servers and FPS was 50-80.
With new setup there is small freeze like every 500ms, totally _UNPLAYABLE_.
Old setup:
Win764bit, Intel DP67BG MB with Intel NIC, Intel 3770K, 16GB 1600MHz, Crucial C300 256GB SSD, EVGA GTX 580 3GB, Corsair A850 PWR
New setup:
Win764bit, Asrock Extreme 9/ac with Intel NIC, Intel 4770K, 16GB 2400MHz, Samsung 840 500GB SSD, INNO3D GTX 780 3GB Hybrid Accelero, Corsair A850 PWR
When I create internet or lan game, there is no stutter what so ever. If I join any server which is not hosted by same computer, there is this stutter issue.
Same thing happens on Arma2 too.
Tried other games like CS GO without any issues on any server.
This is definitely Arma3 and Arma2 issue and is closely related with networking.
Windows 7 64bit is fully updated (fresh install)
Intel nic 18.5 drivers updated
Nvidia latest 331.58 drivers updated
Asrock bios 1.80 updated
Tried also with old GTX 580 display adapter, still stuttering.
Tried to change network cards (MB has 2 intel nic), still stuttering.
Tried to change network speed and offload etc settings, still stuttering.
Tried to kill all extra processes from windows, still stuttering.
Tried to disable windows aero, still stuttering.
Tried to fresh A3 install into different HDD (WD Caviar), still stuttering.
Tried to put process priority to realtime/high, still stuttering.
Tried to change nvidia PowerManMode=Perf, still stuttering.
Tried to change to nvidia experience optimized settings, still stuttering.
Tried to BIOS disable integrated nic/wlan/infra/bt/serial, still stuttering.
Tried to underclock cpu, still stuttering.
Tried to start with -nosound parameter, still stuttering.
Tried to disable soundcard from BIOS and -nosound param, still stuttering.
Tried to unpark all cpu's, still stuttering.
Tried to change GPU PCIe slot, still stuttering.
Tried to disable intel SpeedStep, TurboBoost and HyperThreading, still stuttering.
Tried to disable CPU Thermal Throttling (even temp is 30C), still stuttering
Tried to update dev 1.05.111433 branch, still stuttering.
Any other game works just great, Arma2 or Arma3 is stuttering WHEN PLAYING IN DEDICATED SERVERS. Local server works great.
As a notice, same dedicated servers did work with old setup perfectly few hours earlier.
Network is performing good. Low latency, no jitter or pl and speeds around 80-90Mbit/s. Ingame there is no desync and ping looks ok.
Z-CPU and Z-GPU does not report any issues on HW while stuttering.
Tested SSD speeds read 534MB/s write 502MB/s.
Here is link for current setup performance test (3dmark)
Tested on several missions and two different server HW setups/locations:
Server 1: Intel 4770, 32GB RAM, Intel 240GB SSD, 1Gbit internet (<60ms ping)
Server 2: Intel 3770K @ 4.7GHz, 16GB RAM, Crucial 256GB SSD, 100Mbit internet (<20ms ping)
+ few random servers from ingamebrowser