I have this issue, the Octane preview window stalls upon trying to finalize a render and save via the LW saving formats. ( i have reported this before, but it has come back )
However:
1.- Octane preview window still can save via "preview image" correctly. but only manually. Say 8bit PNG.
2.- It behaves as it everything stops at arround 97% or so ( with ALL projects ), but is NOT a CRASH, as if i click abort+cont, the next frame renders, and then stops again at 90 something percent. ( frame is actually finished, but no green bar appears as the Octane plug attempts to save frame though LW, but never does )
3.- On an animation at say 4K, it will render say 5 frames OK, then it may stall at frame 6 or so. CPU, RAM and GPU ram all ok. GPUS stop working because the frame is actually finished, the issue is that LW or Octane plug, has trouble saving the LW file format ( tiff24, or any other one )
I suspect there is a bug with LW or Octane for LW were the buffer that attempt to save though the global LW settings is halted. I monitored RAM, plenty left on both System ram, and GPU ram.
Secondly, another huge issue is that on SOME projects, not all, the png saved from the Octane preview window is perfect, just like the preview shown on screen while working.
BUT, when the frame is finished, and the image is saved though LW global settings, ( say tif 24, tif 32, etc ) everything goes to hell, gamma, exposure, saturation, very, very different. Unusable.
LW is set to LINEAR colour space, any other settings that i may have missing? I bet i am not doing something right.... I just want a tif file that looks exactly as the preview window. I would not mind PNG, but i have to manually monitor and save before frame finishes!
Request: the Octane render status window does the job well ( regardless if there is preview turned on or not ) ......can future version of the plug save AUTOMATICALLY? ( bypasing LW )
AND saving in regular sets of time? say: save at 25% completion, then 50% completion, etc.
Thank you.
LW 2015.3 ( build 2847)
Octane 3.06.0.5 April 21 2017
System ram 24gb
Vram 6GB+