yep ..... I have the same question.
several weeks ago, I find this problem with lyra2v2.
so I test hashrate report from Ahashpool with my 1080ti ring, maybe over 10 hours.
finally,the pool's hashrate is 40~60% of my ccminer report.
damn it, it's terrible.
I report this to
support@ahashpool.comand then

no any reply to me !!!
so ... I take all my rings to leave Ahashpool.
I have been with ahashpool for over 6 months but did not notice this anomaly till I sat in front of my PC all day long watching the hash rates.