[chao-]

I will take a look this weekend and if I can properly explain and document the issue in detail, I will definitely give you everything I can.

I should add that for an identical Linux distro-and-version, and identical browser versions, my laptop (I forget the SKU, but Intel Broadwell U-series GPU) is about equal in performance between Chrome and Firefox. That is to say, 1440p60 runs smooth on each, so they're good enough that there's no issue from which to discern a difference (which is damned impressive for a 4-year old mobile chip, imo).