New to mining question about multiple machines hash rate

[Machz69]

Hi there,
New to this so looking for a little help.
I have 6 antminer s9’s and I have them on slush pool. All the hash rates are showing 14t +.... but when I go on slush pool and add machines, the first one showed around 9-10t, then I added the second machine and it went up to around 24t, next I added the third machine... and went up to around 30-32...
next added the 4rth and it staid about the same 30-34t? When I added the 5th.. still around the same 32-36t?
I was expecting to see it climb to aroun 60t with 5 machines but seems to be stuck around 30-34t?
I noticed that all the machines lower hash rate on slush pool? So machine 1 is around 9t instead of 10t and so on.. it seems to even the load accross all the machines and keep 34t?
Is there something I need to adjust for more machines? As in difficulty setting? Could my internet not be fast enough? Not sure

Thanks

[Hati]

Hi,

I don't understand much about mining, so I'm sorry I can't help you. But maybe you can ask the question in the forum specialized in mining where sure there are people who know the subject and can help you. This is the link to mining forum: https://bitcointalk.org/index.php?board=160.0