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Slow startup time on Android

December 14, 2021 - 8:16am #1
Topic solved

There are already a few older threads about this, but there doesn't seem to be a solution.

Under Android, every app using Vuforia takes at least 10-12 seconds from the splash screen until the app appears. Tested on reasonably fast mid-end phones (e.g. Pocofone, Snapdragon 845 with 2.8Ghz).

This also happens in the Vuforia samples.

The worst thing about this is that there is just a blank screen during that time. Assuming nothing can be done about the delay, is there at least a way to display a loading screen or something? (This may be more of a Unity question than Vuforia question).

How could i debug where the actual delay happens? If i take a look at the Android system log, the last output before the delay is the GPU capabilities, then 10-12 seconds nothing, then the next line is "Vuforia initialized". So i assume the delay is somewhere in Vuforia?

Thanks for any hints.

Slow startup time on Android

December 17, 2021 - 5:47am #3


Thank you for escalating this issue as it revealed a discrepancy between our legacy APIs and next-gen.

I've opened a ticket for review by our product and engineering teams.

Kind regards,

Dave Downing

Technical Support

Slow startup time on Android

December 15, 2021 - 4:19am #2

I found an older post that stated that Vuforia tries to download a camera/device profile on startup. Apparently this has a timeout when the phone has no internet connection.

That's what caused the issue for me. With active internet connection the startup time was down to a normal 2-3 seconds.


Sorry for the noise, this can be closed.

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