I have 1:30 hour long 4 K video recorded by Sony AX100. MAGIX Vegas v14 is taking more than 30 hours to render it as XVC-S. It is first time, I am using Vegas v14 for such a long 4K video.
I had several times rendered similarly long 4K videos on Sony Vegas 13, which took somewhere 10-12 hours on the same computer.
BTW: I am Windows 10 64 Bit, 1 TB SSD, 32 GB RAM and 16 Gb video RAM, Intel i7 (Skylake).