I've a little problem and I do not understand why...
This is the scene:

When the calculation reaches about 100 s/px, Octane closes.
Without warnings and errors. Crash!
The resolution is 3200 x 1882.
If I try to increase the resolution above the 4200, Octane crash.
Yet are exploited only 347.8 MB of memory ..
Some idea..

Tnx in advanced.