That's fairly low, which indicates that the screen jerkiness that you're reporting is more likely attributed to the complexity of the route scenery you're working on; or running draw distance and visual quality settings that are too high for your current CPU/GPU combo; or some combination of both. In particular, I'd check for any faulty assets, or very high-poly objects/ splines, in the area(s) where you see any stuttering or jerkiness occur.
Believe it or not, in my experience, 90323 - the latest SP2 HF1 beta candidate - is possibly one of the least demanding builds of T:ANE N3V have produced so far to date. I rarely see my CPU exceed 30% (average) utilisation and the GPU typically hums along at less than 60% usage and 60 degrees Celsius, even when running large, complex routes & sessions at the highest draw distance and performance settings.
This simulation has come a long way in recent beta test iterations, especially since earlier builds which could stretch the fastest CPUs and GPUs we could throw at it and bring them to a crawl and/or leave us fearing thermal meltdowns of components!