Sensor

Tesoro went for a top sensor in this mouse, as they chose the PixArt PMW3360, a high-end optical sensor that has featured many times in my reviews. It provides a raw, responsive, acceleration-free tracking with a high maximum tracking speed.

Nominal maximum acceleration and tracking speed values are 50 G and 250 IPS (6.35 m/s) respectively. The low lift-off distance setting is at below 1.2 mm (it didn't track from a DVD in height), and the high setting is at about 2 mm (it tracked from a DVD in height, but not two). Resolution can be set from 100 CPI to 12,000 CPI in steps of 100 CPI. The available polling steps are 125, 250, 500, and 1000 Hz. Angle snapping can be enabled via the software, but I'd highly advise against doing so for gaming.

Paint Test

There is no jitter on the reasonable CPI steps, or any unwanted angle snapping. There isn't any sensor lens rattling, either.

CPI Divergence

CPI divergence is rather funky on the Control R1, which isn't something I have seen so far. As it can be seen on the graphs, lower resolutions have a much higher measured value than higher settings. I don't know what causes this, but a firmware update can possibly fix it—I've notified Tesoro about the issue. Also, it is possibly a one off.

Perfect Control Speed

Perfect control speed (or PCS for short) is very high on this sensor. It's 250 IPS nominally, which translates to about 6.35 m/s. There's no way of hitting it during regular use, so you won't have to worry about random sensor spin-outs.

Speed Related Accuracy Variance

This test shows the sensor's accuracy at different speeds. You can see me doing a fast swipe to the right before I slowly slide the mouse back to its original position. There is no acceleration or deceleration; any displacement in this test is almost entirely caused by human error.

Polling Rate

All polling rate settings seem nice and stable, without any periodic drops or strange outliers.

Input Lag & Smoothing

Just like all PMW3360-equipped mice, the Control R1 has a bit of minor smoothing above a certain CPI step. Since the CPI divergence is so high, it doesn't start at 2100 CPI like on most other mice with the same sensor and is already detectable at 2000 CPI. Smoothing causes about 2–3 ms of input lag in this case, so if you are playing multiplayer games at a competitive level, I'd definitely advise you stay below 2000 CPI.

Click Latency

Click latency is roughly +16.8 ms when compared to the SteelSeries Ikari, which is considered as the baseline with 0 ms. The data comes from this thread and my own testings. Testing was done with a Logitech G203 and the Tesoro Control R1, using qsxcv's program. This is quite a lot of click latency, and there's no option in the software to reduce it.