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Fix slow Internet video on iPad Internet
If your iPad is slow or stutters when viewing video over the internet (e.g. from YouTube), and changing your network's DNS settings, or rebooting the iPad, or changes to the Airport Extreme (or other access point) frequency/band/channel/power/multicast etc. does not fix the issue, here is a possible fix.

Check to see if your Airport Extreme Base Station has DHCP/NAT turned on. If so, instead set your AEBS to Bridge Mode (this will probably work on Airport Express too). This assumes you have a cable modem or other router/switch that you can use instead for DHCP/NAT. No more slow/stuttering video.

[crarko adds: I restart my Airport Extreme every few weeks just to flush the memory and have not experienced any trouble paying video. I do use it for DHCP/NAT on my network.

What I have noticed is that after prolonged use, my Apple TV (2nd generation) does have stuttering and will sometimes just lose it's connection to, say, Netflix. I have to reboot the Apple TV to clear that up, so I don't think it's an issue with the Airport.]
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Fix slow Internet video on iPad
Authored by: edzworld on Feb 04, '11 07:51:28AM

@crarko, curious to know if your Airport Extreme is the dual-network or older model as this fix works on the older Airport Extreme.



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Fix slow Internet video on iPad
Authored by: Tummy on Feb 04, '11 08:29:59AM

I have a 12mb connection with u-verse and had lots of problem with stuttering video. I was able to show it graphically using the Speakeasy SpeedTest app. The graph would show the connection going up and down from 0-10mb. No matter how many times I rebooted or tweaked the settings, it would always do the same.

I ended up fixing it by replacing my 9 month old, $500 Dual Band Time Capsule with a $50 refurbished Linksys router + 4TB NAS. Now the graphs from SpeedTest show the download speed almost flat across the top at 10-11mb.

I also have an Airport Extreme to incease the range from the Time Capsule, and it had similar bad behavior. The range on the new, cheap, router is so much better, I don't need the Extreme anymore.



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Fix slow Internet video on iPad
Authored by: Auricchio on Feb 04, '11 09:04:53AM
I doubt this has anything to do with the iPad; you're just seeing network problems and the iPad is a victim. Some DSL/cable modems cannot properly handle an NAT router. They were originally designed for a single network device (or very few), and a NAT router fires up too many TCP sessions for the modem to properly handle. The more devices on the network, the harder the router pushes on the modem. Using a bridge-mode router helps, because the modem controls all the sessions without getting "surprised" by the router's requests. I had seen this happen with DSL modems a few years ago, but I have not seen the problem with modems in the past few years.
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EMOJO: mojo no longer workin'
Edited on Feb 04, '11 09:06:42AM by Auricchio


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Fix slow Internet video on iPad
Authored by: e_whizz on Feb 04, '11 09:33:37PM

@crarko

Honesty some further vetting of these hints needs to take place. There's been too many recent 'hints' that end up not being what I'd class as hints at all.

I'd have thought Mac OS X Hints is not so much a tech support repository, but a repository for tried and somewhat tested, genuinely useful, hints.

General troubleshooting of tech, where there are specific, or indeed multiple possible causes and multiple fixes is probably not the best use of Mac OS X Hints.


Anyways.... some thoughts on this 'hint' specifically.

The crux of this hint Author's issues are just general network issues. Not specifically a problem with the ipad or Airport.

In general this is either a problem with bufferbloat (google it, rather technical issue facing many routers), tcp session table overload (on the Airport or Modem) or Double-Nat issues.

Just quickly (as there's a lot more to it) bufferbloat relates to over provisioned or over sized buffers along the connection between the end device and the host from whence a stream of data is requested.

The buffers quickly fill up, giving the impression to an host that the connection is quite quick, so it starts sending data quicker and then runs into issues.

You then see the symptoms (at worst) of stuttering video, ping jitter, dropped connections, or at best much much slower connections for the remainder of the session as the buffers drain.

I'm not an expert, but hope this sheds some light. Charlie.



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Fix slow Internet video on iPad
Authored by: Mr. H on Feb 05, '11 07:32:34AM

"@crarko

[Honestly] some further vetting of these hints needs to take place. There's been too many recent 'hints' that end up not being what I'd class as hints at all.

I'd have thought Mac OS X Hints is not so much a tech support repository, but a repository for tried and somewhat tested, genuinely useful, hints.

General troubleshooting of tech, where there are specific, or indeed multiple possible causes and multiple fixes is probably not the best use of Mac OS X Hints."

Hear! Hear!



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Fix slow Internet video on iPad
Authored by: satcomer on Feb 05, '11 07:28:32AM

The has to due to the dreaded "Double NAT" situation. If you have another Router, or Modem that does NAT then you know you have to use "Bridged Mode" in the Extreme. This way only One DHCP server is in your home network. A lot of todays modems also do NAT so check out your network, Extreme owners, especially your Modem and the device directly behind your modem.



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Fix slow Internet video on iPad
Authored by: edzworld on Feb 05, '11 05:31:56PM

@satcomer Just double-checked and you're right, it is a double NAT issue. The slowness never manifested with any other PC/Mac/device - just the iPad and only with Youtube video.



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