I wish to share with other users the right NVIDIA driver version that works with this update.
I've tried this combinations: in all cases I've performed a clean uninstall of the previous drivers in safe-mode using DDU
Octane update: 3.08 stable
Cinema R18.057
Windows 7 - 3 x GTX 1080ti
Driver version: 391.24 or 391.35
Octane standalone: works perfectly
Octane Cinema 4d plugin: crash at startup
switching back to 3.08 test 6 and 378.78 return to works good.
Anyone could share its configuration/drivers combination please?
UPDATE:
I've report here a solution that in my case work:
1) after trying 391.24 and 391.35 I've switched back to 378.78 and as I wrote all works again.
2) I've tried then to install 390.65 and I have started C4d without crash, then I've tried to install most recent updates
3) 390.77 all ok
4) 391.01 all ok
5) 391.24 and works!
So for my poor experience seems that in this case is useful not to upgrade from too different driver version, but seems good to go step-by-step triing firs older drivers ...
I'm yet in test phase, not all work properly at the moment,I've noticed that GUI is very very slow during the rendering , also if I have one card dedicated to my monitors and excluded by renderer.