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exoticblaze420's avatar
exoticblaze420
Seasoned Novice
4 days ago
Solved

Battlefield 6 broken lag / LAT DEV spikes

Hi, I’m on a wired gigabit connection with a Netgear Nighthawk router and everything else online runs perfectly.

 

In Battlefield 6 (PC, US-East), I’m getting severe LAT DEV (jitter) spikes even though my latency stays around 30-40 ms.

 

To rule out my setup, I ran:

• ping -t 8.8.8.8 — steady at ~20 ms with no spikes during in-game lag.

• Then pinged the game server IP (found via netstat -n | findstr 30000) — huge spikes 100–300 ms+ while gameplay stutters.

 

This clearly shows the problem is on the Battlefield server/routing side, not my ISP or hardware.

 

Many players are reporting identical behavior (stable ping, massive LAT DEV swings). Please escalate this to the network/server team.

Thanks for taking my original post down for absolutely no reason!:)

lag
pc
steam
  • exoticblaze420's avatar
    exoticblaze420
    2 days ago

    OskooI_007​ I think i have solved my issue. I kept the user.cfg file, I guess I understand what your saying, but my results with the custom file cut cpu usage in half across all cores, if I dont use the file it really runs at 95-100% causing a bottleneck. With that said, I switched my xmp profile to 2, found out my ryzen 5 5600g its only officially rated for ram speeds at 3200mhz, thats why when I enabled xmp it was defaulting to 3200mhz when I had it on auto. I switched that to 3733mhz which is what the ram is rated for. That also somehow fixed the issue with the incorrect timing of ram aswell. 

    Im not sure if this is also related but i believe it did help a lot, i had my main monitor plugged into my mobo hdmi slot instead of my GPU because with both my primary and secondary monitor plugged into my GPU, bf6 would load in with my resolution set wrong even when I had the correct settings in game. I opened up Nvidia control panel and forced the display to render on the GPU not display, and checked rhe box to override any game setting. I also set the 3d settings for ultra performance. After all that the game is actually running how it should, thank you for all your help. 

     

19 Replies

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  • axemastersinc's avatar
    axemastersinc
    Rising Vanguard
    3 days ago

    Could to many homes on one fiber hut be the reason for the high latency?

  • OskooI_007's avatar
    OskooI_007
    Legend
    3 days ago

    exoticblaze420​ simulation (SIM) is below 60fps and is what's causing time nudge (TN) to spike. SIM is run on the CPU. SIM is in the top right corner of the screenshot below.

    Are you running a custom user.cfg? If so try removing it and see if SIM goes up to 60fps.

    I couldn't see HWiNFO memory timings in your last screenshot. An update window was blocking me from seeing them. Could you post another screenshot?

     

  • exoticblaze420's avatar
    exoticblaze420
    Seasoned Novice
    3 days ago

    OskooI_007​ I was running custom user.cfg, it was helping tremendously getting rid of it just now made it run twice as bad. My apologies about the screen shot here is another. 

     

  • OskooI_007's avatar
    OskooI_007
    Legend
    2 days ago

    exoticblaze420​ yes the HWiNFO screenshot is legible, thank you.

    The memory timings are still loose. For some reason the motherboard isn't using the 18-20-20-47-76 timings. 

    SIM didn't go up to 60fps after removing the user.cfg?

    The only things I can think to try are tightening up the memory timings.

    Overclocking the CPU to 4.4GHz. There's YouTube videos of people playing BF6 with Ryzen 5600G CPUs overclocked to 4.4GHz.

    Check CPU temperature in HWiNFO and make sure it never reaches 95°C. If the CPU reaches that temperature it will thermal throttle the CPU speed.

    Here's a YouTube video showing how to graph CPU temperature and speed in HWiNFO. Just double click on the temperature to start graphing.

    https://youtu.be/tyoHEwBKzms

  • exoticblaze420's avatar
    exoticblaze420
    Seasoned Novice
    2 days ago

    OskooI_007​ I have tried to boost my cpu to 4.4ghz I actually have had it boosted most of the time before troubleshooting. My cpu never even gets over 65⁰C while playing bf6, recent usage as I said doesn't go over 70-75% , when I remove the custom config my usage for both cpu and GPU skyrockets. Is there a way I can go about manually adjusting the time settings for my ram?

  • OskooI_007's avatar
    OskooI_007
    Legend
    2 days ago

    exoticblaze420​ have you tried XMP Profile 2 in motherboard settings?

    BF6 is going to push your CPU to the limit. That's a good thing not a bad thing.

    The problem with custom user.cfg is it causes some of the CPU cores to hit 100% utilization. It only takes 1 CPU core hitting 100% out of the 12 CPU cores to cause stutters and low CPU framerate.

    Without a custom user.cfg the CPU load is spread more evenly across all the CPU cores and prevents any of the CPU cores hitting 100% utilization.

    Here's how to see all 12 CPU cores in Windows Task Manager to check if any of them are hitting 100%.

    To check if there are any CPU cores hitting 100% usage, open the Windows Task Manager CPU graph.

    • Run the game in windowed mode (alt + enter)
    • Open Task Manager (alt + ctrl + del)
    • Open the Performance tab, then right-click on the CPU graph and choose "Change graph to > Logical processors".
    • Set Task Manager to 'always on top' by clicking Options menu.
       
      Now you can play the game and monitor per core CPU usage. If any CPU core hits 100% usage the game will stutter and cause network lag.

     

  • exoticblaze420's avatar
    exoticblaze420
    Seasoned Novice
    2 days ago

    OskooI_007​ I think i have solved my issue. I kept the user.cfg file, I guess I understand what your saying, but my results with the custom file cut cpu usage in half across all cores, if I dont use the file it really runs at 95-100% causing a bottleneck. With that said, I switched my xmp profile to 2, found out my ryzen 5 5600g its only officially rated for ram speeds at 3200mhz, thats why when I enabled xmp it was defaulting to 3200mhz when I had it on auto. I switched that to 3733mhz which is what the ram is rated for. That also somehow fixed the issue with the incorrect timing of ram aswell. 

    Im not sure if this is also related but i believe it did help a lot, i had my main monitor plugged into my mobo hdmi slot instead of my GPU because with both my primary and secondary monitor plugged into my GPU, bf6 would load in with my resolution set wrong even when I had the correct settings in game. I opened up Nvidia control panel and forced the display to render on the GPU not display, and checked rhe box to override any game setting. I also set the 3d settings for ultra performance. After all that the game is actually running how it should, thank you for all your help. 

     

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