[NOTE: I just spent 10 minutes writing a very detailed bug report but when I tried to upload the 4th attachment your captcha popped up and DELETED MY ENTIRE POST! I had to rewrite the whole darn thing again and combine the screenshots, so you're not getting the same detailed report again.]
At unpredictable times Octane renders incorrect dimensions. Today it happened when I was using LiveDB but that may just be a coincedence. As shown in the screenshots (left to right) it renders 4x4 in Camera View (any camera), and landscape in Perspective View even though Octane render settings are 540x960 (portrait). DAZ Studio render settings were changed to 4x4 and even if I change back to 540x960 or anything else, Octane continues to render 4x4 for cameras and landscape for Perspective view. It does correctly follow Perspective View rotation in Live view ... only the dimensions are wrong). It does this for existing cameras or new ones I add to the scene. Once this has happened for a scene, it continues whether I quit Studio and reload the scene or even if I restart my computer.
Other scenes work fine - I can load another scene and render correctly but when I reload the problematic scene (even if it was saved before the problem started) it renders that scene incorrectly again. The only solution is to delete all cameras as well as Octane scene data, save the scene, restart Studio and recreate cameras and Octane render settings. Deleting just cameras or just Octane scene data doesn't work. Its almost like it caches some incorrect settings to disk somewhere (because it continues after a PC restart) and no matter what I do in Studio it uses its own incorrect settings.
I have a DUF file illustrating the problem (if the problem is in the file) but your forum won't let me upload DUF files.
Octane 2020.2.17.61
DAZ Studio 4.16.0.3
GTX 980Ti
Windows 10 Home