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Those results are a bit short of the TCL but still very respectable.

I measured a lackluster 66ms with GLL turned off, and a superb 20.5ms with it engaged. With 4K HDR sources that setting made a huge difference. With 1080p/HD sources input lag for gaming was excellent, with a result of 21ms whether or not I used the Gaming Low Latency setting. Unlike some 60Hz TVs such as the TCL 6 series, there's no option to engage smoothing, aka the Soap Opera Effect. Vizio does offer a Clear Action control that improves that number to a respectable 900 (as long as the Active Full Array backlight control is at Low or Off), but as usual it introduced flicker and dimmed the image, so most viewers will want to avoid it. The M registered proper 1080p/24 cadence but exhibited motion resolution of just 300 lines. I'm not particularly sensitive to motion blur, but if you are, a true 120Hz TV like Vizio's step-up It behaved like a 60Hz TV in my motion tests, meaning it didn't reduce blur as well as higher-end sets with a 120Hz refresh rate. Video processing: The Vizio M-Series Quantum was essentially the same as the 2018 version in this area. Watching HBO's Big Little Lies, the skin tones of the actors and the bright colors of the elementary school as they drop their kids off looked pleasingly realistic. Measurements both before and after calibration were as good as I'd expect from any TV. It preserved black levels about as well as the Sony and TCL, but worse than the others.Ĭolor accuracy: The highly accurate color of the M-Series Quantum showed up in test patterns and program material. The M's semimatte screen finish reduced reflections as well as any TV in my lineup, with the exception of the Samsung and the LG OLED, and beat the TCL in this area. Vizio's Calibrated picture mode delivered the most-accurate picture, which is well worth the loss of nits compared to Vivid.

The table above shows the 2019 M-Series Quantum versus a handful of comparable sets, and it's worth noting that the 2018 M-Series and TCL 6 series got quite a bit brighter in my tests.