Sonicpoint wifi speed varies dramatically

We are setting up 2 sonicpoints in a small office.  We are getting widely varying speeds .  Speed is varying from 100Mbps down to under 20Mbps down minute to minute.  this is a 5GHz network and there are no other 5 GHZ networks in the area.  this is testing it sitting literally right next to the sonicpoint.  brand new SOnicwall NSA 220 and the sonicpoints N with 6 external antennae.  I am running InSSIDer and it shows no other 5GHz networks locally.  signal strength is strong.  When I connect via a wire to the sonicwall router I consistently get 115Mbps down with no variation
drinaldiAsked:
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JohnBusiness Consultant (Owner)Commented:
I wonder if it is defective. No users, no load, and no wireless barriers should reasonably constant speed.

Try another computer with a known good wireless card (make sure all wireless drivers on all computers are up to date). If any good wireless computer does the same thing, you may wish to contact Sonic Wall support.
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JohnBusiness Consultant (Owner)Commented:
First, make sure it is utterly secure so no one can use it except those authorized.

Second, kick everyone off wireless for an hour (lunch hour or after 5pm).

Now test it with no load.

I have my own Cisco RV220W wireless lashed to my Cisco RV042G router. I get the same download speed on my N wireless laptop as on my wired desktop.

The only things that affect wireless speed (other than hardware defects) are wireless path (walls and so on) and number of users / user bandwidth load.
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drinaldiAuthor Commented:
We just now set it up and we are the only people here and it is secured so I know no one else is on it.  My computers is sitting literally right next to it doing a speed test and getting widely varying results minute by minute.
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drinaldiAuthor Commented:
it was my computer.  Another computer did not get the same speed variation.  Thanks for thinking of that!
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JohnBusiness Consultant (Owner)Commented:
@drinaldi  - Thanks for the update and I am glad you found the issue.
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