Non-smooth Timelapse  

Non-smooth Timelapse

I recently started to make timelapses of my prints with a remote camera mod.
I added these lines in the "after layer change"-GCode section that trigger my camera in the back left:

G1 X0 Y360 Z[layer_z] F24000; moves to the back and the left of the printbed
G4 S0 ; waits for the move to finish
G1 X-3 Y360 Z[layer_z] F400 ; triggers the camera slowly
G4 S0 ; waits for the move to finish
G4 P500 ; waits an extra 500ms for the picture to be taken
G1 X0 Y360 Z[layer_z] F24000 ; untriggers the camera 

When doing single extruder timelapses every photo is taken on a different layer.

But when i do multimaterial timelapses there are always 2 pictures taken on the same layer (i can see this when looking at the video frame by frame).
You can clearly see the timelapse being much smoother in the part where there is only one filament printing.

I studied the GCode for a long time and I cant find any difference between the single extruder parts of the print and the multiple material parts of the print.
Also the travelmoves in PrusaSlicer show that the pictures should all be taken on different laysers.

I would be really happy if someone finds a fix or at least has some input on why this is happening because it drives me crazy.
Thank you very much!