I cinem 4d R21 with the driver 442.19-desktop-win10-64bit-international-nsd-whql now with Octane 2020.1.4
There was a cuda-crash after rendering 200 and a few frames. This is the most stable solution I found after a week of trying.

I wrote to the support. I used the driver suggested in your troubleshoot and did everything else discribed above.
i optimized the scene that i have 5 GB of free vram. Never the less it´s crashing.

I wrote to the supprt.
I did really everything. Used the driver your troubleshootpape suggests and everythingelse I found in the forums.
I had like 3.5 GB free vram and got crashes all the time after 10 or 20 rendered pics.

Really, i can´t understand why something like this can happen. I have to ...

I optimized the scene more. It still crashes, but i was able to export it to standalone.
Doesn´t take the Expresso-driven animations. Do i have to bake all Expresso-related Objects to export it to Standalone?

Hey hemul355, Hey aoktar,

did you find any solutions. Ihave also crashes all the time. I have enough free vram, i changed drivers (451.48,451.77,452.06).
I made a clean uninstall of drivers and changed the cuda-timeout to 60 sec....

What have you done? Stayed with the 2019-Version?

Best regards ...

Sorry. forgot to mention... the error happens while watching on the Liveviewer.

Exporting the Scene to orbx doesn´t work. It always interrupts in the middle...
I have a few Cache files and Alembics. I don´t know if this is the reason?
I am working on a scene with the same setup at the moment. I only use one of the two graphic-cards.
Out of nothing this Error appears.

CUDA ...

Hi Beppe,

at the moment i´ve problem to export the orbx-file.
It stucks after half of the 329 frames. It has to render from 2647 to 2975.
I will restart and try again later.

ok. This did not help either = (
Any ideas, experience anyone?

Also removed drivers with DDU and reinstalled latest driver 452.06
I´m give it another try just in the moment. This is the last thing i know to do.

tips i read in this Post:
viewtopic.php?f=86&t=70433