I just tested this fan curve again during a few bonfire runs and against a boss in Dark Souls 3. It kept the GPU temp in the 78-79c range (max temp was 80c but it didn't stay there long). The default fan curve average was 83-84c for the same area. Not a huge difference, but it gave me peace of mind knowing it was below the magic 83c point without engaging jet engine fan mode.Do you mind posting a pic of your fan curve? I'm curious to try it out. The one issue I have with the PC is the jet engine GPU fan when it gets going.
If you want to keep it a few degrees cooler than what I had, maybe bump up the fan speed by 5 at each of the node points at 70c and above.