If you are using DynamicLink, you could easily exhaust all your system's resources. Also the real culprit here is probably the Premiere color correction stuff and MB Looks, which you force into quirks mode by using it that way...
Thanks Mylenium, I appreciate your help.
In fact the DynamicLink was really slowing down the rendering process. I exported the Premiere edited footage and then imported to AE, and then the rendering time decreased a lot.
But there's something curious. Today, on the first time I used the rendered Premiere footage as source. After Effects took incredibles 25 minutes. Unfortunately, that base footage had some mistakes and I had to redo the process. But this time, when rendering the final output file the remaining time changed to 4 hours. How about this big difference? It's the same project, same files, same RAM consumption...I don't even have a clue.
Anyway, I'm considering buying a 128GB SSD for SO and softwares, or a 1TB External HD to free-up my HD space and maybe store the source files of my projects - but my computer doesn't have neither eSata nor Firewire conections. Wich would be the best option?
Flush the disk cache/ media cache. Sounds like AE is taking forever to verify existing cache data.
Thank you so much, Mylenium! My rendering time jumped from 3 hours to 50 minutes!
That happened because my cache was full? How many GBs should be reserved for that?