Guides

Short answers for the Razer Viper V3 Pro on Windows, each with the command that does it. Everything here was done on the mouse freenapse was written on.

Set the DPI and polling rate without Synapse
Five commands, or the Performance page of the settings window. The values are written to the mouse and stay set with nothing running.
Settings not saving to onboard memory
How to read what the mouse actually holds, and the four reasons a setting appears not to stick.
Uninstall Razer Synapse and keep your settings
Write the settings once, remove Synapse 4, and what the uninstaller leaves behind.
Razer Synapse alternatives
freenapse on Windows, OpenRazer and Polychromatic on Linux, Synapse Web in a browser, or setting the mouse once and removing everything.

Something missing? Open an issue with the question, or a pull request with the answer.