Hey FreddyUnreal,
I’m fighting very hard depressions and tried to do a digital detox, I deleted my user here.
Does not work. Went to a doc. 
My polyend tracker and akai force sequences lxr-02 very very well.
I too think on the octatrack side it’s related to note off issue.
I somewhere posted here a retrokit rk-002 program that you could put between octatrack and lxr-02, but 1) i can’t find it, my google foo is lost and 2) i can’t find my cable too, so I can’t verify.
I’m sorry.
But:
Perhaps: Octatrack Midi out -> daw -> lxr perhaps?
edit: found the retrokit program: Octatrack MKII midi notes sticking in OP-1 and Organelle - #100 by gerkinear