Skip BMesh conversion and read the selection attribute directly. With a Ryzen 3700x, my test face of a simple 4 million face grid became over 4000 times faster, from 2.6s to 0.6ms.
Skip BMesh conversion and read the selection attribute directly. With a Ryzen 3700x, my test face of a simple 4 million face grid became over 4000 times faster, from 2.6s to 0.6ms.