A few things that may help it respond better and allow easier tuning —
If your injectors are paired (two injectors per-channel) properly to the same cylinders that wasted-spark would be paired (sister cylinders that TDC at the same time, 1-5, 4-3, 2-6), then your squirts should be 2, not 3. You want an injection for every TDC on each cylinder, not 3 per-cycle. This may also be pushing the injectors to drop into a non-linear flow range, and possibly one reason for the stepped VE values (see below).
To avoid fighting incorrect settings, I'd also flatten your IAT Retard (until you know what you really need), and enter some valid values into your Injector Corrections table (see above, and it will need some re-tuning), and the Dwell Voltage Corrections table. Cranking dwell doesn't affect TFI or GM HEI and a few other systems, but for others; once you have good Dwell Corrections, you can calculate your Dwell Protection time to allow full spark energy from cranking to redline at the set dwell period.
For now, you don't want soft retard interfering with tuning your high-rpm areas. Raise the soft limit rpm to at or above the hard limit, or lower your hard limit to the soft limit if that's as high as it should go. Most applications will not want or need soft limiting dumping heat into the system near redline anyway.
There are other changes I would make, but those should help you to "see" what the engine needs easier and without fighting wonky settings while trying to tune. Good to see it running!