@Alek, Pix4D Desktop 4.1.19 was released on Thursday, December 14, 2017. If you have an opportunity to conduct a comparative test of overall processing time between 4.0 and 4.1 with the project configuration you outlined above, we would greatly appreciate it if you shared your results. You can already download the latest version of Pix4D Desktop at https://cloud.pix4d.com/download/,
@Philip and Adam, I anticipate that the the extended processing time that Philip experienced with his NVIDIA GeForce GTX Titan X Pascal and that Alek experienced with the project configuration he described above are caused by different factors. To stay informed about the status of the Titan X investigation, please go to https://community.pix4d.com/t/4284. More information will be shared as soon as we have an update.