Re: Apple Catalina Appears to Introduce Massive Jitter

[Cory Sell via NANOG <nanog () nanog org>]

Might be worth disabling each AP to see if there's one out there having an issue playing nice with the MacBook. Also 
try different combinations of two APs working together. It's possible the MacBook is flip flopping because the power 
levels are fighting each other.

Does the Mac have this issue at your local coffee shop or another establishment with Wi-Fi? You can try to rule out the 
AirPort card in the Mac itself.

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-------- Original Message --------
On Oct 29, 2020, 7:55 AM, Mark Tinka wrote:

> On 10/29/20 14:40, Jared Mauch wrote:
>
> > I know there was a recent fix Apple did for devices talking to UBNT APs
> > for their handsets, perhaps there's a similar fix needed on your side?
> >
> > I have all UBNT at home for wireless and periodically have some random
> > issues which I can't explain, but for the most part have things tuned to ensure
> > there's little to no interference.
>
> I am running TP-Link AP's. Two of them are Google OnHub, which was built
> by TP-Link, and the 3rd one is the TP-Link Archer C6.
>
> So they all support 802.11ac, which is where my device spends most of
> its time (5GHz).
>
> No interference from my neighbors (separated by thick walls), and I am
> running separate channels for both frequencies per device.
>
> Also, no other wireless device is suffering like this.
>
> > Do you see the same when hardwired? I keep many of my devices hardwired
> > to avoid odd jitter issues.
>
> No issues on the wire at all. Quite perfect.
>
> Like you, I hard-wire all fixed devices (TV's, a/v receivers, satellite
> decoders, gaming consoles, energy meters, e.t.c.). The only devices on
> wireless are mobile devices, tablets, laptops and the Windows PC which
> is hooked up via wi-fi as well.
>
> > I also saw some older versions of the Pulse Secure
> > VPN add the behavior you describe, including the more uptime the slower it would
> > get.
>
> I use Viscosity as an SSL/VPN client. The issue is the same whether it
> is enabled or offline.
>
> Mark.