ChaCha20 is (relatively) slow, but! ChaCha8 does not have known attacks and 2.5 times faster than ChaCha20. Not mentioning speed variability of ChaCha family i

ChaCha20 is (relatively) slow, but! ChaCha8 does not have known attacks and 2.5 times faster than ChaCha20. Not mentioning speed variability of ChaCha family is a flaw in analysis.