Hi,
Sadly I’m not a HXFX owner and not able to check this out. Although this has already been done by “codamedia”, when it was tested in both in Helix Native and a single path in a Helix. Also, I find it rather confusing that you keep mentioning you need this to work on a HXFX box, but you actually managed to “freeze” a Helix by adding an amp and cab block.
I’m a Helix floor (and Native) user and have been since late 2016, and in all that time I have never managed to get the thing to “tilt” - ever - and I have put some pretty oddball patches into it. I have had it hooked up to external rack digital delays, Yamaha SPX 90, Ditto x4 and Boss RC30 loopers, Zoom pedals and even a put Line 6 POD HD500 in the FX loop just for sh!t ‘n’ giggles. I’m still waiting for it to fall over.
Forum contributor, “Malhavok” (Ben Vesco) has done his own tests of DSP usage, and has been publishing the lists for quite some time. Find the latest updates here:
https://benvesco.com/store/helix-dsp-allocations/
Hope this helps/makes sense.