That seems excessively long, even for Advanced smoothing mode. For another point of reference, I processed a 10.5 minute 1080p 30 fps video in 21 minutes using Advanced smoothing mode. This was on a Xeon E5-1620 with 32GB ram running Windows 10.
Your video has about 4X the number of frames, so I would expect it to finish in less than 1.5 hours on that machine. Still slow, but not as slow as you're seeing.
Is there a lot of high-speed motion (e.g., fast turns) in your video?