Spikes when looking around

[GrumpyPilot95]

Hi, I have a powerful PC and this doesn't happen in any other game. The thing is when I move around the mouse I get some very annoying "spikes" or "jumps" on the screen, instead of a smooth movement. It's not related to fps drops, I get constant 60 fps. Happens at least since PRBF2 1.2. My CPU is overclocked to 4.2GHz, hyperthreading disabled, everything in BIOS. Any ideas? Thanks!

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System Information
------------------
  Operating System: Microsoft Windows 8.1 Pro (6.3.9600)
      Architecture: 64 bits
   Current Culture: Spanish (Spain, International Sort)
       Motherboard: ASUSTeK Computer INC. RAMPAGE III BLACK EDITION
         Processor: Intel(R) Core(TM) i7 CPU       X 990  @ 4.20GHz (Physical: 6, Logical: 6)
            Memory: 8,00 GB
      DIMM Modules: DIMM0: 4,00 GB @ 1333 MHz
                    DIMM2: 4,00 GB @ 1333 MHz
         Page File: 1,88 GB
    .NET Framework: 4.5+ Release Build: 379893, Runtime: 4.0.30319.34209

Display Information
-------------------
 Display Device(s): Generic PnP Monitor on NVIDIA GeForce GTX 980
   Display Mode(s): 1920 x 1080 (32 bit) @ 60 Hz
    Driver Version: 9.18.13.5286 (352.86)
    Display Memory: 4,00 GB
     Multisampling: 2, 4, 8
               DPI: 96 (100%)

Audio Information
-----------------
  Primary Playback: Altavoces (Realtek High Definit
 Primary Recording: Micr?fono (Realtek High Definit
  Open AL Renderer: Software
               EAX: True
           EAX 1.0: False
           EAX 2.0: True
           EAX 3.0: False
           EAX 4.0: False
           EAX 5.0: False
             X-RAM: False

Disk Information
----------------
      Install Path: C:\Program Files (x86)\Project Reality\Project Reality BF2
                    Free: 132,65 GB, Total: 232,54 GB, FS: NTFS, SSD: False
          Mod Path: C:\Program Files (x86)\Project Reality\Project Reality BF2\mods\pr
                    Free: 132,65 GB, Total: 232,54 GB, FS: NTFS, SSD: False
     Profiles Path: C:\Users\BorjaNicol?s\Documents\ProjectReality\Profiles
                    Free: 132,65 GB, Total: 232,54 GB, FS: NTFS, SSD: False
    Update DL Path: C:\Users\BorjaNicol?s\AppData\Local\Project Reality\Project Reality BF2\Downloads
                    Free: 132,65 GB, Total: 232,54 GB, FS: NTFS, SSD: False
   Update Log Path: C:\Users\BorjaNicol?s\AppData\Local\Project Reality\Project Reality BF2\UpdateLogs
                    Free: 132,65 GB, Total: 232,54 GB, FS: NTFS, SSD: False

Game Information
----------------
    Installed Mods: pr
       Current Mod: pr
           Version: Standalone - 1.0
        PR Version: 1.3.0.0
          Language: english
   Debug Available: False
     Large Address: True
Supported Hardware: None

Profile Information
-------------------
      Profile 0001: GrumpyPilot95
              Type: Offline
 Last Used Profile: True
        View Intro: False
        Fullscreen: True
      Display Mode: 1920x1080@60Hz
Display Mode Valid: True
   Graphics Scheme: High
     Multisampling: 8x
             VSync: True
   Terrain Quality: High
   Effects Quality: High
  Geometry Quality: High
   Texture Quality: High
  Lighting Quality: High
   Dynamic Shadows: High
    Dynamic Lights: High
 Texture Filtering: High
    Audio Provider: Software
    Provider Valid: True
     Audio Quality: High
               EAX: True

      Profile 0002: Borja95
              Type: Online
        View Intro: False
        Fullscreen: True
      Display Mode: 1920x1080@60Hz
Display Mode Valid: True
   Graphics Scheme: High
     Multisampling: 8x
             VSync: True
   Terrain Quality: High
   Effects Quality: High
  Geometry Quality: High
   Texture Quality: High
  Lighting Quality: High
   Dynamic Shadows: High
    Dynamic Lights: High
 Texture Filtering: High
    Audio Provider: Software
    Provider Valid: True
     Audio Quality: High
               EAX: True

[Barbrady]

I assume everybody experiences that. Happens when you look in a direction with many players in that direction. Maybe worse with a higher ping.

[GrumpyPilot95]

Negative, I just tested it on 1 player local server and happens too. I have the cores unparked btw. Thanks for replying.

[Raklodder]

It's mostly due to high CPU-usage (only one CPU-core may be utilized with Refractor 2 engine) and sometimes due to GPU-clocks refusing to use 3D-clocks (mostly high performing modern graphics cards anyway... happens to me everyday; simply run Afterburner or equivalent to check) which may cause lagspikes since 2D-clocks are often much lower (unless specifically chosen to run your application with "maximum performance" in your Nvidia control panel).

[GrumpyPilot95]

Thanks for the explanation. So are you saying there is nothing I can do?

[Barbrady]

Nvidia Control Panel > Manage 3D Settings > Power Management Mode on maximum performance, either on global or program setting if it is on adaptive.

[GrumpyPilot95]

Negative. No change. Still have spikes. Thanks for replying.

[ComradeHX]

Have you tried setting the affinity of cpu cores?

[GrumpyPilot95]

Yes, I set core 0 to PRLauncher.exe and from 1-5 to PRBF2.exe with ProcessLasso. That solved the fps drops, but the "spikes" are still there. Thanks for replying.