Razer BlackWidow V4 Pro 75%: 4000Hz Polling Rate Automatically Reverts to 1000Hz When Synapse Is Running | Razer Insider
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Razer BlackWidow V4 Pro 75%: 4000Hz Polling Rate Automatically Reverts to 1000Hz When Synapse Is Running

  • September 13, 2026
  • 8 replies
  • 89 views

Hello Razer Support,

I am experiencing an issue with my Razer BlackWidow V4 Pro 75% regarding the 4000Hz wireless polling rate.

Device information:

  • Keyboard: Razer BlackWidow V4 Pro 75%
  • Connection: 2.4GHz wireless
  • Keyboard firmware: 1.03.00.00
  • Razer Synapse version: 4.0. [removed by moderator]

Issue:

When Razer Synapse is completely closed, I can set the keyboard to 4000Hz using the keyboard's OLED display, and the setting remains at 4000Hz.

However, as soon as I launch Razer Synapse, the polling rate automatically reverts to 1000Hz.

If I try to select 4000Hz directly in Synapse, it briefly allows me to select it but immediately switches back to 1000Hz.

I have already tried the following troubleshooting steps:

  • Reinstalled Razer Synapse
  • Updated the keyboard firmware
  • Updated/checked the wireless dongle firmware
  • Tested with the keyboard connected only through 2.4GHz wireless, with no USB cable connected
  • Disconnected my mouse and its separate 2.4GHz receiver
  • Set 4000Hz directly through the keyboard OLED while Synapse was closed
  • Restarted Synapse and confirmed that the setting immediately reverted to 1000Hz

The problem is consistently reproducible: 4000Hz works and remains selected while Synapse is closed, but launching Synapse causes it to revert to 1000Hz.

Could you please confirm whether this is a known issue with the current version of Razer Synapse and the BlackWidow V4 Pro 75%?

I would also appreciate instructions on how to resolve the issue or confirmation on whether this requires a software fix, device replacement, or further diagnostics.

Thank you.

    This topic has been closed for replies.

    8 Replies

    ekibelevtresh
    • ekibelevtresh
    • Insider Mini
    • September 13, 2026

    Hi, I'm having a similar problem—I can't select the frequency in Synapse. How do you select the Hz mode on the display?

    • liuzec
    • Insider Mini
    • September 15, 2026

    I'm experiencing the exact same issue with my Razer BlackWidow V4 Pro 75% Wireless.

    When connected via 2.4GHz wireless using the original HyperPolling Wireless Dongle, selecting 2000Hz or 4000Hz in Razer Synapse immediately switches back to 1000Hz.

    My keyboard is less than a month old, and all firmware is up to date. Power-saving mode is disabled.

    I've tested the keyboard on three different computers, and the issue occurs on all of them. I've also already tried the usual troubleshooting methods, including reinstalling Synapse, updating the firmware, and re-pairing the dongle.

    This seems to be a software or firmware issue rather than a problem with a single computer.

    Has anyone found a solution? Razer Support, could you please confirm whether this is a known issue with Synapse 4 and the BlackWidow V4 Pro 75% Wireless?

    ekibelevtresh
    • ekibelevtresh
    • Insider Mini
    • September 15, 2026

    It looks like the issue is most likely related to Synapse 4 or the firmware rather than the keyboard hardware itself.

    Since the exact same problem occurs on multiple computers and other users are experiencing it as well, it seems unlikely to be a PC-specific issue.

    Hopefully Razer can confirm whether this is a known Synapse 4 bug and provide a fix in an upcoming update.

    • liuzec
    • Insider Mini
    • September 15, 2026

    It looks like the issue is most likely related to Synapse 4 or the firmware rather than the keyboard hardware itself.

    Since the exact same problem occurs on multiple computers and other users are experiencing it as well, it seems unlikely to be a PC-specific issue.

    Hopefully Razer can confirm whether this is a known Synapse 4 bug and provide a fix in an upcoming update.

    Actually, I’m having the same issue as you. I was wondering how you were able to select the polling rate directly, because I can’t find that option anywhere in Synapse 4.

    This problem has been going on for almost half a month now, and honestly, the update process for Synapse 4 is painfully slow. I’m really hoping they fix this soon.

    ekibelevtresh
    • ekibelevtresh
    • Insider Mini
    • September 15, 2026

    I can’t select 2000Hz or 4000Hz either. The options are visible in Synapse 4, but whenever I select 2000Hz or 4000Hz, it immediately switches back to 1000Hz.

    So in my case, the higher polling rate options are there, but Synapse simply won’t keep the selected setting.

    • liuzec
    • Insider Mini
    • September 15, 2026

    I can’t select 2000Hz or 4000Hz either. The options are visible in Synapse 4, but whenever I select 2000Hz or 4000Hz, it immediately switches back to 1000Hz.

    So in my case, the higher polling rate options are there, but Synapse simply won’t keep the selected setting.

    我也是这个问题 一模一样 我还碰到了好几个和我一样问题的的人 也都是这个问题

    MakeHerSquirt
    • MakeHerSquirt
    • Insider Mini
    • September 16, 2026

    I’ve been having the same issues the last couple days an I’ve owned this keyboard since it released this is a veryyyyy new issue no longer then a week so I’m thinking it definitely has to be synapse 4

    Razer.Ten
    • Razer.TenRazer Support
    • Razer Support
    • September 16, 2026

    Hey guys,

    If you continue to experience the issue with your keyboard and Synapse, please send me a PM with the serial number so I can verify it in our system and use it when I forward your case to our Technical Team so they can further check on it.


    *Thread locked to curb conversation to PM. 

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