prcp demo1 desyncs

not sure if this has been discussed/settled before, but i ran prboom -iwad plutonia.wad -file prcp.wad, and when demo1 plays, player died a few seconds after picking up the plasma gun, seemingly getting stuck by a spider and failing to kill it. after which its typical desync playback instead of switching to demo2.

does anyone know how this happens? i tried complevel 4 and 2 with no difference.

This is soon after a revenant fires, so I'd guess it is the standard internal demos desync problem. You could verify that by extracting the internal demo and playing it back as a regular demo.

I also suspected that,  but I added -playdemo demo1 to the command line and it's still the same way. 

What are you trying to play it back on?

Hmm, maybe it was just released with some desynching demos. Look at this post, made just the day before the wad was released. Perhaps it was a low priority, since who watches internal demos to the end anyway?

dew might be able to shed more light on this.