APP starts smooth, but gets slow and freezes after some time.

Question

In my original project, the app started ok but gets really slow after 6-8 minutes of tracking. I throught that my scripts had some problems that would require more RAM memory/CPU usage or other things that would make the system gets slow. But then i built a simple AR app with one image target that shows a cube when tracked, nothing more than it. The app still gets slow within 6-8 minutes of tracking. Actually, i made some other tests:

- 5 minutes of constant image target recognition/tracking = App gets really really slow, almost freezes.

- 3 minutes of constant image target recognition/tracking = App doesn't gets slow

- 3 minutes of constant image target recognition/tracking + some other minutes just with the app open = App gets slow after 8-10 minutes

- 8 minutes just with the app open with the camera blocked by an object (showing black image) = App gets slow

- 20 minutes just with the app open with the camera pointing toward me aroud the pc (camera getting movements) = App doesnt get slow

I really have no idea what could be happening. Any help will be very appreciated.

Answer 1

What is your device? If you are using low level devices, you could change the image tracking mode from quality to performance.

Comments

I used 3 devices:

- Galaxy Tab A
- Motorola E5
- LG Power K10

Note: In the Galaxy Tab A, the "slow state" of the app comes later (about 10 min more) than the other devices, but still inevitable.

I already made that change from image quality to performance and the problem still occurs.

---

The observation is considered as normal on these devices. It is similar when you play a recent game on old or low level devices.

---

for motiontracking：

1. Use the setTrackingMode interface to set the tracking mode to be VIO

2. Set the image resolution to Resolution_640 (640 x 480 resolution) using the setFrameResolutionType interface

This results in almost minimal performance consumption.