Adding my noobie experience.
4xHikVision DS-2CD2032F
1xHikVision DS-2CD2432F
1xZyxel IPC-3605N
Intel Skylake 6700K, 16GB RAM, Samsung 1TB EVO SSD
Cams at 10FPS, direct-to-disk, BI video format.
CPU usage hasn't changed much (hard to tell) with the update and hardware encoding activated...