Effective February 3, 2026, Razer Synapse 3 will no longer receive updates or support cloud services. After this date, cloud syncing of configurations across PCs using the same Razer ID will be disabled.
Note: Your installed devices will continue to be configurable in Razer Synapse 3. However, if you uninstall these devices completely, you will need to upgrade to Razer Synapse 4 to continue customization.
Download Razer Synapse 4 and migrate your existing Razer Synapse 3 profiles using the Profile Migration Tool to retain access to your configurations. See How to migrate your Razer Synapse 3 Profile to Razer Synapse 4 for instructions.
On-the-Fly (OTF) Sensitivity allows you to adjust the DPI level of your mouse instantly without opening Razer Synapse. You can adjust your DPI with a similar effect as a DPI slider, in which the DPI increases or decreases by increments of 50, instead of the normal increments per sensitivity stage.
Follow the detailed instructions below to enable On-the-Fly Sensitivity on a Razer mouse.
Select an action
Use Razer Synapse 4
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Launch Razer Synapse 4.
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Select your mouse from the DASHBOARD.
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Select a button you want to customize.
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Click “SENSITIVITY”.
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Select “On-The-Fly Sensitivity” from the SENSITIVITY dropdown list.
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Click “SAVE” to complete the process.
The device layout of your mouse now reflects the changes made.
Use On-The-Fly Sensitivity button
To use the On-The-Fly Sensitivity button, do the following:
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Press and hold the button programmed for "On-The-Fly Sensitivity".
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Roll the scroll wheel up to increase the DPI or down to decrease the DPI.
The adjustment will be locked where you released your programmed button.
