Q: Screen delay info for laptops?

Since the last few years a lot of FGs have been ported to Windows platform, I’ve become interested in buying a laptop for playing them. Since I want to keep my stuff mobile, I’d rather not carry around a lagless display, which brings us to my question: what info do we know about (lagless) laptops/laptop screens?

Looked up over the internet and this forum, and found almost nothing. I even asked displaylag.com, but no go.