https://arstechnica.com/gadgets/2022/05/new-adaptive-sync-tiers-crack-down-on-misleading-response-times-flicker/

So, you're looking at a monitor or laptop that says it has Adaptive-Sync or variable refresh rates. Maybe it's Nvidia G-Sync or AMD FreeSync. Maybe the vendor was detailed enough to include an Adaptive-Sync range, indicating the refresh rate range, as well as a response time figure and overdrive feature promising extra-smooth video playback. But then you see a bunch of other monitors and laptops claiming the same thing. How can you tell which display will offer a better media experience?

To help, the Video Electronics Standards Association (VESA) launched a certification program Monday for PC monitors and laptop displays with Adaptive-Sync. The Adaptive-Sync Display Compliance Test Specification (Adaptive-Sync Display CTS) aims to provide more insight into the screen tear-fighting technology.