Issues with download triggers and file naming consistency on mobile devices

[carry6767]

Hi everyone,

I've been using the latest jDownloads 4 series on a Joomla 5 site for a file-sharing project, and it's generally been fantastic. However, I've run into a specific issue related to how the frontend handles download requests when the mobile device is under heavy load or running concurrent utility scripts.

I've been testing our download flow for mobile users, and while I was chatting with some developers in the website community about environment stability, I noticed that the "Automatic titles from filename" feature in jDownloads occasionally fails to resolve if a background executor is active on the device. Sometimes the download triggers fine, but other times the browser seems to hang on the "preparing download" state before finally timing out with a 404 or a generic network error.

Has anyone else noticed that mobile browsers (specifically on iOS) struggle with the jDownloads routing or SEF behavior when there are other resource-heavy background tasks running? I'm wondering if the PHP chunk size or the way the script handles the download handshake is sensitive to the device's CPU spikes.

I've already tried deactivating the Joomla cache and template compression as suggested in the "Read Before Posting" guide, but the inconsistency remains. If anyone has experience optimizing the download manager for high-concurrency environments or has tips on making the frontend download flow more resilient to external script interference, I'd really appreciate the help!

[Arno]

Hello,
at the moment this report cannot be verified as a jDownloads issue.

The description is too unspecific and does not contain a reproducible test case.
If this is a real bug report, please provide:

1. exact jDownloads version
2. exact Joomla version
3. exact steps to reproduce the issue
4. whether it also happens on desktop
5. whether it also happens with SEF disabled
6. the exact error message
7. one concrete test case with one specific download

Without clear reproduction steps, it is not possible to analyse this further.