Octane 3 uses more memory if you have the parallel samples > 1. Try turning ON out of core textures.-> failed to allocate device array
CUDA error 2 on device 0: The API was unable to allocate enough memory to perform the requested operation.
Although memory issue makes no sense to me as I've seen people working in Octane on machines less inferior to mine (Asus ROG G750JS with 32 GB RAM, 3GB memory on graphics).
I'll collect the data and send a report. Again, I didn't have this popup error in either one of the V3 betas, just troubles to getting the scene to load in render window.
Paul