Obviously, there are situations where this you need the computed style and this performance hit is unavoidable, but otherwise, keep opts.computedStyle set to false.
Coverage remained the same at 95.349% when pulling 8d3b024dcecc1b3e8fba67c98c6fd7a10ecb87b0 on viwek:patch-1 into 6e8fbc0671cb04410067bd9a3be4aecdbae637a9 on azaslavsky:master.
Obviously, there are situations where this you need the computed style and this performance hit is unavoidable, but otherwise, keep
opts.computedStyle
set tofalse
.