Thanks for keeping an eye out for performance :)

The difference in settings isn't only about nir, but also sisched and noerror.
Still a curious observation.

That said, with default settings, the patch seems like a (small, but
statistically relevant) win in most cases. The exception of Tesseract really
doesn't matter, nobody has 400 Hz displays. And the regression in Civ is
unfortunate, but IIRC that's often notoriously CPU-bound.

I'd say the signs are slightly in favour of keeping the patch.