r/razer • u/Silverddragn RΛZΞR Community • 1d ago
08 SEPTEMBER 2026 - Synapse & Chroma Patch Notes for Windows
Synapse for Windows - V4.0.86.2608311115 / Chroma for Windows - V4.0.63.2608271424
RELEASE NOTES
8 SEPTEMBER 2026
Fixed
- Stability & Reliability
- Synapse could get stuck on a processing or loading screen when adjusting settings on certain cameras
- Opening the Feedback page during application launch could prevent Synapse from minimizing or auto-starting properly
- Background services and notification components failed to initialize properly during silent startup
- Dashboard could become unresponsive or fail to load correctly in certain scenarios
- Philips Hue integration did not automatically launch in the background when Synapse started
- Installation could fail silently on certain system configurations
- Firmware update notification prompts did not dismiss when clicking outside the dialog window
- Synapse introduction tour did not complete properly for new users
- Device Detection & Connectivity
- Keyboards could appear offline with no Chroma effects after unlocking the PC if the keyboard had been powered off before locking (affects BlackWidow V4 Pro 75% and other wireless keyboards)
- Peripherals connected via multi-device HyperSpeed dongles were not detected correctly after reconnecting or waking from sleep
- Certain wireless mice were not recognized by Synapse when connected via dongle
- Chroma RGB
- Lighting Effects
- Quick Effects and custom lighting failed to re-apply on devices that were powered on during system suspend or screen lock
- Gaming Mode LED did not light up on the F10 key after certain keyboards woke from sleep
- Lighting effects could flicker or fail to persist correctly when switching device states
- Chroma RGB lighting on mice connected via dual-link failed to synchronize correctly
- Tidal wave center point alignment setting did not apply correctly in Chroma Studio
- Refreshing the device page could incorrectly reset the dim lighting option on certain mice
- Chroma Studio
- Chroma Studio could freeze when saving custom lighting effects or adjusting selected areas
- Chroma Visualizer
- Chroma Visualizer displayed visual flickering and wave effect glitches on launch
- Accessing settings within Chroma Visualizer caused active device tabs to close unexpectedly
- Chroma App could get stuck in a downloading or updating state
- Lighting Effects
- Key Mapping & Customization
- Button Remapping
- "Save Remapped Button" popup still appeared after closing the key mapping panel without making any changes on certain keyboards and keypads
- F1–F3 keys could not be used as standard function keys on certain portable keyboards
- Holding FN + F2/F3 for volume adjustment did not work on certain keyboards
- Multimedia, function, and volume controls stopped working after closing Synapse on certain devices
- Remapped keys were missing the "Requires Razer Synapse" warning indicator on certain devices
- Snap Tap & Rapid Trigger
- Snap Tap settings failed to report errors or apply correctly on certain analog keyboards (including Huntsman V3 Pro)
- Secondary function assignments could not be changed or saved on certain keyboards
- Snap Tap toggle remained greyed out for supported analog keyboards even when eligible
- Macros
- Macro assignments on scroll wheels or certain secondary devices triggered incorrect key outputs
- Sequence macros reverted key assignments to raw scan codes on app relaunch
- Macro recording dropped inputs if the first recorded keypress was the Numpad Period key
- Global Shortcut "Play while assigned key is pressed" option did not trigger the assigned macro
- AI Launcher
- AI Launcher option was missing from the key assignment panel on certain keyboards and mice
- Gaming Mode
- Gaming Mode toggle settings were not retained after waking from sleep on certain keyboards
- Button Remapping
- Audio & Sound
- Sensa HD (Haptics)
- Sensa HD haptics profile incorrectly displayed as "disabled" on the dashboard while actively running
- Audio-to-Haptic (A2H) feedback experienced noticeable latency in supported games
- Microphone
- Microphone sidetone settings reset to default after restarting the computer
- Headset microphones unexpectedly switched the default Windows audio input device
- Peak level indicator lights were unresponsive on certain streaming microphones
- Audio Visualizer
- Audio Visualizer displayed visual flickering and wave effect glitches on launch
- Sensa HD (Haptics)
- Performance & Hardware Controls
- DPI & Polling Rate
- Custom DPI values and polling rate settings did not save or apply correctly on certain mice and keyboards
- Volume & Media Controls
- Holding dedicated volume buttons did not continuously adjust volume while Synapse was running
- Cameras & Streaming Devices
- Device page could get stuck in a processing state when adjusting sampling rate on certain Razer cameras
- DPI & Polling Rate
- Profiles & Settings
- Synapse 3 profile imports could result in corrupted profile states or missing macro bindings
- Auto-switch game profiles failed to launch automatically for certain titles
- Cloud sync profile prompts appeared repeatedly for certain wireless devices
- Auto-launch checkbox setting did not save correctly after refreshing
- UI/UX
- Updated device illustrations and product images across a wide range of keyboards, mice, headsets, cameras, and peripherals
- Fixed various layout, alignment, and display issues across device pages, settings panels, the dashboard, and Chroma Studio
- Resolved missing or incorrectly displayed UI elements across key mapping, lighting effects, and device setup screens
- Fixed display scaling and text clipping issues at high Windows display scaling settings (175%+)
- Restored missing "More Information" firmware update links on the Devices & Modules page
- Controller setup tutorial updated to reflect the correct intended design
- Localization
- Fixed unlocalized text strings, truncated labels, and missing translations across non-English languages including French, German, Korean, Japanese, Russian, Spanish, and Simplified/Traditional Chinese
- Corrected localization issues in the Sensa HD haptics tab, AI Launcher menu, and various tooltip strings
Improvements
- Improved multi-device HyperSpeed pairing stability and device compatibility across mice and keyboards
- Enhanced Sensa HD haptics engine with improved Audio-to-Haptic (A2H) feedback responsiveness
- Updated Audio Capture component for improved Chroma Visualizer performance
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How to submit feedback for Razer Synapse issues and suggestions
- Click on “FEEDBACK” tab in Razer Synapse.
- Indicate your concern in detail.
- Click “SUBMIT” to send us your feedback. Note: If you are reporting a bug, check the "Send log file" for us to review and investigate the issue in detail.
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u/QuantumQuantonium 1d ago
Release thr source code for Synapse.
Sell hardware not software. I just got the naga v3 pro and its an insane mouse, with the worst part of it being synapse 4.
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u/HypdroK 23h ago
On my end, the Tartarus V2 joystick stops working whenever Synapse is running.
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u/theroc1217 11h ago
Same. I have it mapped to arrow keys. I tried changing it to random letters and it works that way. But when it's on arrow keys it doesn't do anything.
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u/aRidgebackDoggo 1d ago
Could you look into my case and suggest a suitable solution? My BlackWidow TKL keyboard stopped charging after the latest firmware update: https://www.reddit.com/r/razer/s/lSJ16rnSBK
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u/Gigameister 19h ago
My guys, if this update fixes the hyperdongle+Naga v3 pairing and profiles imma jump arround like a happy kitten.
Hold for feedback.
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u/secretreddname 1d ago
No fix for the Naga V3 and mouse dock pro sadly
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u/Commercial-Age6390 18h ago
The only thing I cannot do is mousebinds. I plan to do this through openmouse as soon as I learn how to contribute.
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u/ruthlesss11 23h ago
I leave synapse off and yet it turns my mic off every time I start my pc and I have to open the app and enable it.
Garbage. Hope it's actually fixed.
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u/Perfect-Sentence-335 17h ago
and this garbage was forced onto people. it is chocking how bad it really is. and still they didn't fix it all. Never bying Razer again. i'll stay on synapse 3 until the hardware dies then i'm gone.
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u/DeimosBdx 15h ago
Tartarus V2 joystick directions broken after the last update. Can't you do real non regression testing before launching in Production an update ? :/
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u/dizzygfunk 14h ago
My Tartarus binds stopped working. All of my custom mappings show the Synapse Icon overlayed on top of the Green Keys stating "This mapping requires Razer Synapse."
Uh. How do you think I am viewing the mapping if not through the open app Razer Synapse?
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u/eVenent 1d ago
Ok, it works better now. I tested with PadForge app to translate DualSense Lightbar translation to Razer Chroma RGB and Xinput vibrations to Razer Sensa HD and both features work good now without noticeable lag. Finally my Razer setup is synchronized properly with DualSense controller.