Superish Saw by Avrilcadabra
If you have two neutrons, on the second one put VCF1 out to VCA on on the 2nd neutron also. Put multi1 out on neutron 1 to freqmod in on the neutron 2.
LFO is set to midi sync
Att1 will control filter on both. You can put either env2 or LFO uni into ATT1 in, to change what modulates both filters, envelope 2 or LFO uni. will work on one neutron also.
can be seen in action on dual neutrons here. https://youtu.be/0Norby7lc_w
Bring a big reverb it is a must.