Really really enjoyed this! :clap:
That grubby guitar synth sound is spot on - I agree that it is quite relentless though, some variation would definitely help round the whole tune off...
Maybe add another break similar to the one you've got on about 2 1/2 minutes at a later point in the tune but strip it all down even more? The synth noise works really well by itself at the start of the tune, I think a longer break and buildup where you mess around with that sound in isolation a bit before slamming the drums back in might work?
I'm new to producing myself anyway though so might be best to ignore me entirely ;)