How to speed-up x264 2-pass encode?

[ben45]

Hello
How can i speed-up this x264 setting without (or minimum) quality loss? (megui)

program --level 4.1 --pass 2 --bitrate 940--stats ".stats" --threads 16 --deblock -1:-1 --keyint 240 --ref 5 --qpmin 10 --qpmax 51 --vbv-bufsize 25000 --vbv-maxrate 20000 --me umh --direct auto --trellis 2 --psy-rd 1.0:0.15 --output "output" "input"

I use one-click encoder

[KarMa]

Why two treads?
https://forum.videohelp.com/threads/379929-Megui-very-low-cpu-usge

[hello_hello]

It's called multi-threaded posting.

Ironically though, it reduces efficiency rather than increasing it.