Some more speedups and printout of PSNR has been added to the master branch of
https://github.com/divideon/xvc (use -tune 1 if you want to perform analysis based on PSNR and -tune 0 for best visual quality).
It would be interesting to hear more reports on the usage of threading in xvc in different configurations and on different platforms to see if there are settings that can be adjusted for improved performance.
Other comments and suggestions are of course also welcome.