ok guys my findings so far on modern computer...
I am running a Macbook Pro with Win 10 Pro on Bootcamp.
I have 4 NEVE units, 2x 8801 and 2x 8803.
If using the same USB-hub for all devices the Total recall software will crash as soon as you connect the same model of an already connected model (two 8801s for example).
So you need to use two separate USB-hubs with 8801 + 8803 on one USB-hub and 8801 (B) + 8803 (B) on the other.
I use the very expensive Apple Thunderbolt to USB+HDMI+USB-C charge for this. The USB-hubs are very cheap but both are powered which it says they should be in the Total Recall manual.
I havent worked that many hours with this setup yet but I have found a bug, that when using all NEVEs my second 8801 will glitch in the Total Recall software saying it is reset/fine but I know I have turned a knob.
The other 3 seems to be ok.
So I have to save a store for 3 units then store the 8801 (B) settings separately.
However, no crash so far when using two USB-hubs.
So, the Total Recall software is VERY picky regarding USB-connections/hubs.
I am also using a separate computer for the Total Recall software...with no other USB-devices connected.
It is absolutely worth the hassle if you need total recall and recently discovered that you have been fooling yourself BIG TIME when saying that plugins sound as good as hardware EQ and dynamics... as I have said for the last 20 years...

What a difference. It is absolutely shocking that hot shot producers mix with plugins. It is night and day.
Regarding analog summing, I am not totally convinced. it is a matter of "coloring" more than summing.