I also use Wipe Out in the Patch Out form and while I'm very happy with the final result, this stuff has made me absolutely hate cleaning guns. I have had a similar experience to you. It literally takes me days, if not a week to clean a gun. You have the let the stuff soak each time, and it just takes forever to get the patches to start coming out clean. I recently bought some of the Accelerator thinking it would speed this up, but it doesn't seem to have sped it up much at all. I mean it takes hours and hours of work to get gun clean. I've yet to find anything else that does as good of a job though. If I clean it with something else, then run this stuff through it, it'll often pull out more copper. I'd love to hear suggestions from others on how to speed this up, but so far I haven't found a way.
The above post does bring up a good point. If you're using a brass jag, Wipe Out will react to it and turn the patch blue. So that's something to pay attention to, but it's not the reason why it takes me so long to get the copper out, so I'm doubting that it's what you're doing as you can see that it reacts to the brass very quickly.
Overall, I've really started slacking off on cleaning my guns as it takes soo dang long to actually get it clean.