Speed, location and compass jumping around, intensified by using OpenGL

[FFMbyBicycle]

Description

I'm using OsmAnd for ~5-10 years and multiple devices and now I got a strange behavior I cannot explain or debug. Please see the attached short video clips.

Steps to reproduce

Just start OsmAnd and ride i.e. a bicycle. It does not matter if navigation is used or not or which profile is used. It does not matter if "Kalman filter" and/or "magnetic sensor" are enabled or disabled.

Actual result

Here you can see the jumping direction/speed using OpenGL rendering:

1-h264.mp4

I tried it again using the old Version 1 rendering engine, which reduces the jumps a lot:

2-h264.mp4

This is strange because I used OsmAnd on this device for months without problems using OpenGL. However I'm not sure if the behavior started after an OsmAnd update or after switching my OS from /e/ OS to LineageOS.

I also recorded the GPS status a day after that (the larger speed increase in the middle of the clip was on purpose), which does not show those extreme jumps:

3.mp4

Expected result

The speed and direction should be more or less steady and not jumping around.

Your Environment (required)

OsmAnd Version: 4.8.6 and Nightly 4.9.0#3347m (2024-10-03), same behavior
Android/iOS version: Android 14 (LineageOS 21)
Device model: Fairphone 5
Crash-Logs: No crash detected, but can supply i.e. logcat if required