@Videotrack : ok so a quick search and unfortunately it seems that I can't upgrade the processor (*sob sob*).
@MarioD : thanks for the url that I was not aware of. Directly put in my bookmarks for future uses!
@Noel : thank you for the trick. I understand better how BIAB does work. Btw, I loved "What do you say", very nice crooner vibe!

@Matt : no it is not a laptop. It's a good computer believe if or not and so far I could do everything I wanted with fast response. But as you said BIAB requires LOT of CPU. You saw correctly, as I said in this 2 in 1 computer you can't really change anything.
Ok so between my first whining post and now things have improved even if my BIAB is not as fast as I would like. To sum up what helped :
- deactivate background running stuff
- getting rid of 1 antivirus out of 2
- whitelisting the c:\\bb directory in my antivirus
- learn how to use the Freeze function (now I see the benefits and it helps a LOT)
- also and I didn't mention it before the usage of "repeat" within BIAB helps accelerate things. I noticed that I had a few bars doubled (AA pattern). So instead of leaving AA on BIAB (2 exact same bars back to back) I cut each doubled bar and I used on the remaining one the "repeat" function so that each one of those bars repeats itself twice. It lightens up the numbers of bars on my BIAB and I could feel that BIAB had to work less so to speak (aka take less time to regenerate).
I know now that I won't have a ferrarri BIAB but between this morning (unbearable) and tonight there is a good improvement especially knowing that so far I'm using 5 different RTs, so all things considered it's not that bad now.