Hey Ben,
thx for the quick reply. I have uploaded an example project with the problem occuring to
https://ufile.io/2ifdscsh
I had some partial success with setting Delay Capture to my particle's lifespan (i.e. cutting the buildup framewise), but it seems not to be working in all cases...
Edit: I'm exporting at 16 fps, maybe that's the issue?
Edit2: I got the workaround to work reliably when rendering at least 2 seconds worth of frames. It DOES work this way, but it also means a lot of manual labour since I have to export single images and delete every second frame and then build the spritesheet in Photoshop.