My biggest complaint over the past year...and I've posted about it before...is that something in the plugin repeatedly changes or resets values under the 'Octane Settings'. Seems to happen when switching tabs or opening/closing settings window. Happens a lot.
Sometimes clicking around in the program will even change kernels. Other times it turns the Response back to SRGB after I've set it (repeatedly) to Linear. And using Presets doesn't really help. Often it won't remember or re-set to the Preset that I have configured.
I can understand bugs happen with CUDA or with changes from Maxon, etc. And I know there is a LOT of complexity in this software and a lot for the devs to dig through. But frankly this issue just seems amateurish.