SkyDemon Forums

AIP download very slow

http://forums.skydemon.aero/Topic37977.aspx

By Schokex - 1/18/2026 3:09:54 PM

I have a similar issue.
When downloading AIP or maps via WiFi (or LAN on my computer) in SkyDemon, it is unbelievably slow (maybe a couple 10 kb/s). If I switch to cellular it works fine. Tried with Windows, Android and iOS.
My ISP is Telekom and I have a feeling that it has to do with them. If I set up a hotspot with my phone and connect to it with my tablet, it is fast. If I connect to WiFi with Telekom ISP it is super slow. Tried at 3 different locations (unfortunately all Telekom ISP) with the same result.
Browsing, downloading anything else, etc. is fast. It is just SkyDemon where I experience the issues.

Any suggestions how I can resolve this?
By Tim Dawson - 1/19/2026 10:20:13 AM

We have a few customers experiencing this issue at the moment. So far, we haven't understood the cause of it. Our servers seem fine, as far as we can tell, and it doesn't seem to be an issue with a particular version of SkyDemon. So we continue to scratch our heads.
By Schokex - 1/25/2026 9:29:40 PM

Just for information: downloads work fine again. 
I didn't change anything on my end. 
By erchegyia - 1/26/2026 7:22:34 AM

 
Schokex - 1/25/2026 9:29:40 PM
Just for information: downloads work fine again. 
I didn't change anything on my end. 

same here. Last airac was very slow; this week's normal.
By Tim Dawson - 1/26/2026 10:05:10 AM

This is very puzzling, but I am glad speeds have returned to normal, at least for now.
By iefbr14 - 1/28/2026 6:58:27 PM

 
Tim Dawson - 1/26/2026 10:05:10 AM
This is very puzzling, but I am glad speeds have returned to normal, at least for now.

At the moment it is very slow here. I tried to download France Charts, and the progress bar is not moving since 10 minutes. 

BR
Andreas
By iefbr14 - 1/29/2026 9:41:45 AM

 
Andreas - 1/28/2026 6:58:27 PM
 
Tim Dawson - 1/26/2026 10:05:10 AM
This is very puzzling, but I am glad speeds have returned to normal, at least for now.

At the moment it is very slow here. I tried to download France Charts, and the progress bar is not moving since 10 minutes. 

BR
Andreas


Since a few minutes it is working again. 
By Johannes B. - 1/31/2026 10:52:26 AM

 
Andreas - 1/29/2026 9:41:45 AM
 
Andreas - 1/28/2026 6:58:27 PM
 
Tim Dawson - 1/26/2026 10:05:10 AM
This is very puzzling, but I am glad speeds have returned to normal, at least for now.

At the moment it is very slow here. I tried to download France Charts, and the progress bar is not moving since 10 minutes. 

BR
Andreas


Since a few minutes it is working again. 
20 Minutes to download the Croatia chart here...
By stipe - 4/3/2025 8:30:58 PM

I observe that the download speed of AIP charts from all countries, as well as additional flight guides (e.g. AvioPortolano) has become very slow since some weeks. The AvioPortolana for example with 800 MB downloaded once in 2 or 3 minutes, now it takes nearly 30 minutes.
Observed on Mac, iPad and iPhone, all with the latest Skydemon version.