We confirmed Nintendo's Switch 2 TV dock supports VRR - so why doesn't it work with Switch 2?
Briefly

Nintendo Switch 2 features variable refresh rate (VRR) screens, allowing smoother gameplay and compensating for inconsistent frame rates. Initially, Nintendo announced that the Switch 2 would support VRR in both handheld and docked modes, but later retracted this, stating VRR is only supported in handheld mode. Despite this retraction, tests indicate that rival handheld devices can utilize VRR through the Nintendo Switch 2 dock, successfully outputting 4K at 120Hz with HDR and VRR capabilities. Testing confirmed fluid performance at various frame rates on compatible televisions.
"Nintendo Switch 2 supports VRR in handheld mode only," the company told Nintendo Life, apologizing for "the incorrect information."
I’ve just confirmed that the official Nintendo Switch 2 dock does support VRR - by plugging the Steam Deck into it.
We found multiple rival handhelds can output 4K at 120Hz with both HDR and VRR if you plug them into the Nintendo Switch 2 dock.
I downloaded the open-source VRRTest tool and messed with various settings, just to check that intermediate framerates between 48fps and 60fps and 90fps all stayed smooth on my TV.
Read at The Verge
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