Software

Dubbed "GameDev," the software for the VT3Pro Max has all options distributed across several tabs. The first tab allows setting profiles. The second tab includes CPI adjustment for up to seven levels and ranges from 10 to 30,000 CPI in increments of 10. CPI values can be entered manually, and any non-native values are truncated to native ones. The third tab has button remapping options, allowing one to bind all buttons to certain basic, key, or macro functions. The fourth tab likewise has basic Windows pointer settings along with miscellaneous other settings. Polling rate can be set to 125, 250, 500, 1000, 2000, 4000, or 8000 Hz, though 8000 Hz is an experimental setting in wireless operation. Lift-off distance can be adjusted in 11 steps. Sleep time can be set to a value between 5 and 120 minutes. Button Debounce Delay can be defined independently for press and release, with possible values being 1, 2, 4, 8,16, 24, and 32 ms. In addition, MotionSync can be enabled, which synchronizes SPI reads with USB polling events at the cost of up to an entire interval of added motion delay. Line Correction is a different name for angle snapping and can be turned on or off. Ripple Correction enables or disables smoothing, which is applied at higher CPI steps to reduce jitter, at the cost of increased motion delay. Two additional settings exclusive to the 3950 are present as well. The sensor angle may be adjusted between 30° and -30°, and a so-called glass tracking technology can be enabled to improve sensor tracking on non-textured glass surfaces. Given that this setting forces the sensor into said tracking mode, it should be left disabled when using surfaces other than clear glass. Lastly, the fifth tab houses the macro editor.

All setting changes are saved to the on-board memory, so the software does not need to be running (or be installed) all the time. On my system, the software had a RAM footprint of 196 MB on average when running in the foreground, which doesn't change when minimized, be it to the taskbar or system tray. Upon exiting the application, all processes are terminated, as they should be.

Battery Life

Rapoo cites a battery life of up to 200 hours at presumably 1000 Hz. The software includes a percentage-based battery life indicator with single-digit accuracy, though its accuracy and reliability seem to be limited, which is why I'm unable to gauge expected battery life. For the record, after six hours of continuous usage at 1000 and 2000 Hz, the indicator stood at 97/98%.

By default, the VT3Pro Max goes into sleep mode after ten minutes of inactivity, which is way too high and therefore should be lowered to the minimum of five minutes.

Using the included USB Type-A to Type-C charging cable, I measured the charging speed during the constant current stage, which sits at 0.336 A when lifted and 0.324 A when not lifted. The battery has a capacity of 800 mAh (3.7 V) and utilizes a 3-pin JST connector.