CRF 40 = 90.7 VMAF @ 400 kbps & 0.9 MB file size

CRF 38 = 91.6 VMAF @ 440 kbps & 1.0 MB file size

CRF 36 = 92.6 VMAF @ 500 kbps & 1.2 MB file size

CRF 34 = 93.7 VMAF @ 530 kbps & 1.3 MB file size

CRF 35 = 93.1 VMAF @ 510 kbps & 1.2 MB file size

Webm related is last one to keep things consistent.