I recived normal referral payment from these faucet,but they are different.For example for btcboom I get 24 satoshi and 120 satoshi referral payment.It depends from which country the user is, and maybe owners detected using of proxy/VPN from your referrals so you see so small referral commission.
I was informed that if faucets after claim sends only few satoshi, it means that admins of faucets detects that you trying to cheat and blocks IP adress. So, it makes harder to claim with changed IP.