Yes as long as you save your latest unlock password, you can install it in a new computer.
As for speed. My wife usues a dual core machine, and QU works fine. The only time, I wish for more is when the cache files are building.
This occurs when a new folder is opened, and QU needs to initialize new images. After that, the next time you open that folder, it no longer needs to do that, so speed is good.
Dual core, quad core, or 9 cores have an effect onb cache building and mutiple batch printing.

Fred

All that is well and good.
I print for personal use on an HP800ps.
The only "neat" feature I need the software for is to quickly create edges for my gallery wraps so I can crop prints to fit the bars.

It is taking up to TEN minutes to run the algorithm to create a file from a perfectly good jpg to add two inches of info on four sides.

i MUST have a problem with my install.

there must be a way to address the cache, I cannot save a jpg to file because "I do not have enough storage space"... four terabyte drives and 28 gigs of ram.

somehow I am missing the boat.

i also do not ride the forum boards much... where are you putting the screenshots

 

I just did a test and simulated making a 30x20 print at 600ppi. It took 1.5 minutes for the print preview to appear. You must seriously poor performing PC.
EDIT; my jpeg thumb appeared instantly. Longer caching times are associated with raw images.
Terry

EDIT: It sounds to me that you may not be using QU to best advantage in your work flow - you appear to be resizing images to 600/1200ppi in some other software which will have inferior interpolation algorithms. It's always better to load the original image into QU, whatever resolution it is and let QU interpolate as it sends to the printer. It will automatically use the native resolution of the printer. HP printers are usually 600ppi or 1200ppi. You need to ensure the driver is set to the best quality and QU will show the available resolutions.