As per request, I'll give you a review as well. It's good to be asking for feedback on songs!
Composition: 12.5
Mixing: 10
13/8: 9.5
Additional thoughts: This is definitely the most experimental track on the contest, without any competition (although Jazzdew's "material artifice" also comes pretty close, you might wanna check that out if you love this kind of music). A whole bunch of random noises making a chaotic mess. That's always a "either love it or hate it" situation. In this case I think it's safe to say for me that I love it! The sound design is very well done, it's very progressive and I like the overall vibe of this. Also fair that you t-rated this, because of how ominous this is lol. With a genre like this it is VERY hard to get the mixing done right though, and in this case it unfortunately shows. Some part completely exceed what visual reference Newgrounds has for volume, at those parts my ears also start to hurt. Mixing is really subjective when ur making stuff that is just all-and-all experimenting, because some parts are supposed to sound "ugly" in a good way. The reason I scored so low on the 13/8 you already explained yourself; because of the very fluid bpm the time signature is very hardly noticable, especially at the extratone parts. Nevertheless I loved the ride of tonal kicks, loud sfx and glitchy amen breaks! You can get a long way with the crazy stuff you make!