Razer Synapse 4

I’ve been dealing with a Razer Synapse 4 issue affecting the Tartarus Pro for over a year now.Functionality that worked reliably in Synapse 3 — especially 8-way directional input (diagonal movement) and simultaneous key combinations — is no longer usable in Synapse 4.This is not a minor issue. It represents a clear functional regression.The currently suggested workaround (switching to 4-way input) is not a viable solution, as it significantly limits the usability of the device to the point where it is no longer usable for its intended purpose.At the same time, there is no option to return to Synapse 3, as it has been discontinued.This issue has not only been observed by me, but has also been reported multiple times across the community.At this stage, the question is no longer whether the issue exists — but:Is this a known, unresolved problem —or a deliberate change in functionality within Synapse 4?Given the repeated community reports, a clear and transparent statement from Razer would

I’ve been dealing with a Razer Synapse 4 issue affecting the Tartarus Pro for over a year now.Functionality that worked reliably in Synapse 3 — especially 8-way directional input (diagonal movement) and simultaneous key combinations — is no longer usable in Synapse 4.This is not a minor issue. It represents a clear functional regression.The currently suggested workaround (switching to 4-way input) is not a viable solution, as it significantly limits the usability of the device to the point where it is no longer usable for its intended purpose.At the same time, there is no option to return to Synapse 3, as it has been discontinued.This issue has not only been observed by me, but has also been reported multiple times across the community.At this stage, the question is no longer whether the issue exists — but:Is this a known, unresolved problem —or a deliberate change in functionality within Synapse 4?Given the repeated community reports, a clear and transparent statement from Razer would

After updating to Razer Synapse 4, my internet connection started dropping for ~30 seconds approximately once per hour. Other devices on the same router (Wi-Fi) worked fine during the drops, confirming the issue is on the PC side.After extensive diagnostics using Windows event logs, I identified the root cause:The following Razer services spam the Windows network stack with hundreds of "hostname changed" events every minute, which eventually causes the connection to drop:- Razer Chroma SDK Server- Razer Chroma SDK Service- Razer Chroma Stream Server- Razer Game Manager Service 3EVIDENCE:With Razer services running (April 23, 2026):Windows event log Microsoft-Windows-NetworkProfile/Operational showed dozens of Event ID 4004 firing every single minute — hundreds per hour, all with "hostname changed: true".With Razer services stopped (April 26-27, 2026):Only ~40 events over two full days, all corresponding to normal PC boot cycles. Zero unexplained network disturbances.Confirmed disconnec

When i try to upload on workshop Chroma effects it dosent upload it works on profile  and macro but not uploads i dont know if its on my side or if its the s4’s problemDid razer stop doing razer chroma effects fixes?I try to find more Chroma effects profiles but its none. Does none buy v4 (Yes i know the switch problem but still)Edit: Tried even with a brand new chroma profile dident work still. Restarted the program also i did.

I’ve already sent this to support but I thought I’ll put this here too.This is an issue I have only on Synapse4.Basically, when ever I cycle keymap(I use 1 as main and 2 for some obscure shortcuts) and use it, Synapse can randomly overwrite the 2nd keymap with the mapping of 1st’s.Here’s a video of me reproducing this issue by spamming keys while cycling, but this has happened multiple times when I’m using Tautarus normally and I don’t spam keys.My temporary solution for this is to dupe the preset so I can switch to it when it happens, delete the original and dupe the dupe for next time...

Hello,I would like to report what appears to be a regression in Razer Synapse 4 regarding macro execution speed, compared to Synapse 3.I am using onboard memory profiles with macros created previously in Synapse 3.When Synapse 4 is completely closed, the macros execute instantly with no noticeable delay, exactly as configured (0 ms delay). However, as soon as Synapse 4 is running, a significant delay appears between macro actions - even when the macro itself is set to 0 ms delay.I have prepared two videos that clearly demonstrate this difference in macro execution speed:• Synapse 3 (fast / no delay): https://youtu.be/NsiYelsQUrk• Synapse 4 (noticeable delay): https://youtu.be/9Bn-Bn-WMZkIn both videos, the same macro profile was used; the only difference is whether Synapse 4 was running or not. The behavior suggests that Synapse 4 intercepts or throttles hardware macros, inserting a forced minimum delay.This was not present in Synapse 3, and represents a performance downgrade that affe

Sound quality on my Razer Kraken headset has become completely terrible. I’ve tried uninstalling Synapse 4, turning off all effects in the control panel, etc. I’m about ready to throw away this headset and buy a new one from a different company. Is there a cleanup tool that will delete everything and then I can try again before I throw this in the trash? This is so disappointing considering how expensive this headset was.

Here's the complete final post ready to copy and paste:Title: BSOD/Kernel Corruption Fix — Legacy Razer Drivers Being Staged Alongside Modern Drivers by Razer Elevation ServiceSystem ConfigurationMachine: MSI Titan 18 HX AI A2XWJG Processor: Intel Core Ultra 9 285HX RAM: 96GB GPU: NVIDIA GeForce RTX 5090 Laptop GPU NVIDIA Driver: 591.86 Game Ready (installed via Custom + Clean Install, graphics driver only) OS: Windows 11 Business, Version 25H2, Build 26200.8246 Installed: Fresh install from Microsoft media on 3/21/2026 Razer Synapse: Version 4.0.86.2604140749 Peripherals: Razer Naga Trinity, Razer Tartarus V2BackgroundI was experiencing frequent BSODs on Windows 11 after a fresh install from Microsoft media. The crash signatures varied but were consistently kernel corruption-class errors:KERNEL_MODE_HEAP_CORRUPTION (0x13A) SYSTEM_SERVICE_EXCEPTION (0x3B) KERNEL_SECURITY_CHECK_FAILURE (0x139) KMODE_EXCEPTION_NOT_HANDLED (0x1E)Dump analysis consistently showed kernel heap corruption det

I want my CTRL key to also send U key presses, but I want it to keep it's original behavior. My Corsair keyboard has an option called "retain original input" which makes it exactly do what I want.I tried to setup a macro on my CTRL key in razer synapse but the issue is it will send CTRL and U but then I cannot "hold" CTRL (to crouch in-game for example), it blocks the original behavior completely.Is this not possible in synapse ?

I'm using a Razer Blade 18 2025 laptop. How do I set Razer Synapse 4 to not overwrite the icm color profile I added in Windows 11? I set the color profile via color management in Windows 11, save it as the default profile. After restarting, whenever Synapse 4 starts, it overwrites my profile with the default profile in Synapse 4. It worked fine for me on the previous installation, but I don't know why it's not working for me now? I noticed that I previously had a custom color profile filled in directly in Synapse 4, but now there is an empty field, see the picture. I'm using a graphics card in optimus mode. Can you please help me? Thank you! 

I ran into an issue with Razer Synapse 4 not showing wireless battery percentage for 2 different wireless models. Both are listed as officially supported and backwards compatible with Synapse 3 and both had the same exact issue with no battery percentage displaying. I uninstalled Synapse 4 and reinstalled Synapse 3. BAM! I can now see all wireless mouse battery percentages. I attempted to troubleshoot with support but it took way too long to get valuable responses and I’m not interested in downloading a software log capture tool. Will check out Synapse 4 at a later date perhaps.I thought I’d post this for anyone who has a similar problem as all of the threads I’ve seen are requesting PM’s and don’t show a resolution status or troubleshooting steps.

So, I currently play gta online and hear to music while I play, I currently have a razer huntsman v2 as my main keyboard and I use the razer sypnases 4 software since I also have other razer products.The issue is that when I play gta online, for some reason the media keys act as a other keys. For example: The previous song acts as a Q, which makes me to change radio, a bit of annoying sometimes. The Stop/Resume song, acts as the G, which makes blow C4’s, also annoying And the skip song, acts as to pause the menu, which is more annoying.I have found out that is mainly the razer sypnase 4 software since I have tried to play gta without and it doesn’t happen, and no, I don’t use any macros and either my default profile of the keyboard has no change.I honestly don’t know how to fix this, maybe I should go back to razer sypnase 3 and wait till this issue is fixed?

Subject: Critical Installation Failure (Exit Code: 4294967295) and Device Detection Issue - Razer Viper V3 ProTo the Razer Support Team,I am writing to report a persistent technical issue regarding the installation of Razer Synapse (both v3 and v4) and a device detection problem with my Razer Viper V3 Pro.The Problem:Despite being a developer-level user and trying multiple advanced troubleshooting steps, I am unable to install Razer Synapse 4 via the standard installer or Windows Package Manager (Winget). I consistently receive the following error:Error: "Installer failed with exit code: 4294967295" (Equivalent to Exit Code -1).What I Have Already Attempted:Environment Variable Redirection: I redirected both User and System TEMP/TMP variables to C:\Temp to bypass any path or permission issues.Clean Reinstallation: I have completely purged all Razer folders from %AppData%, %ProgramData%, and wiped Razer keys from the Registry (HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Razer).Alternative I

Beta name was removed, but beta quality was not. Give it more months to cook.

I buy a viper mini this month.but it can’t connect to synapse4. how should i do guys

When I have the headset plugged directly into my pc I’m able to change setting in synapse but when I switch over to hyperspeed wireless(no longer plugged directly into pc, but plugged in through the oled control panel)I’m no longer able to customize synapse or the oled screen. The only time I’m able to change options is when(plugged directly into my pc by usb) when I try to change anything with the oled panel it says the device need to be unplugged and turned into hyperspeed wireless. But when I unplug the headset from my pc I’m no longer able to customize through synapse because it says the ”device is switched off” which my headset is powered on and is connected to my pc(I still have audio) so I know it’s powered on. I’ve tried restarting my pc, reinstalling Razer synapse 4, reinstalling drivers. Nothing has seemed to work.

I have been using Razer Synapse 4 for a long time, but as of today, April 3rd, my razerappengine is using 18% CPU and 10g RAM and climbing if I don’t crash it with Task Manager. Also when I’m using the APP interface, the icons of my products are shaking and blinking like they’re spazzing out.

Hello, I’m currently using my Viper Ultimate for 3-4 years for now. Even before, I was using my side button for Alt+tab function. Previously with Synapse 3, If I hold down the button, the “alt” stay held and only “tab” is pressed (Turbo enabled) -Just like when you press alt+tab, release tab and hold on alt, I can choose which app to move to with how many click I want. I got updated to Synapse 4, the “alt” is now also pressed with “tab”, now I can only choose to tab out between 2 app and now I have to alt-tab manually on my keyboard, It is very anoying to me. Can’t even rollback to Synapse 3 because Razer decided not to let us do that. Does anyone have a solution for this,  and yes I do aware ctrl-alt-tab is a thing, but It is 1 additional click instead of holding down the side button, It’s a big inconvenience for my high-speed usage, plus. I don’t want to change my habit. Razer please, Is this really an upgrade???

"Hi ,My DeathAdder V4 Pro firmware update is stuck at 50%. I've tried:- Plugging into different USB ports- Re-downloading firmware from your website- Uninstalling and reinstalling Razer Synapse- Updating in Safe Mode- Using a different cableIssue persists. Could you please help troubleshoot further?

v2 hyperspeed I'm using it, but the EQ settings aren't working

Hello! I connected my headphones wirelessly, and they're working. I can hear music and chat with friends. But the app keeps showing them as off, so I can't see the battery level or set them up. Could you tell me what the problem might be and how to fix it? Thanks in advance.

I’ve upgraded from Synapse 3 to Synapse 4 on Windows 11 and cannot control the lighting of my Raptor 27 (165Hz) monitor via USB-C connection. Previously in Synapse 3 this was working.  

Every time I boot my Blade, Razer Synapse 4 started slow and showed blank at first. After about 10sec, it shows downloading Blade 18. It takes about 2min to load drivers for Blade. I hope to launch Synapse more faster, and not to download & install after I boot my Blade. Could it just install new driver when it updated？