Or is it just one of Phil's balls in my throat?
Are there monitors/tvs with VRR rates at 30 or below?
Yes there are, but very few.
The Samsung Q90R is an excellent 4k TV with impressive picture quality. It has a high native contrast ratio, great local dimming support, and excellent black uni...
The most common lowest VRR bound you'll find is 40~45hz.
While I don't know what Halo does, it's entirely possible to break VRR through certain implementation approaches - on consoles at least, without bugs.
Sure, if it's breaking, it's still an issue/exception, not the norm and not something like a developer forgetting to add the appropriate support for it in a patch like some suggested earlier.