Bitcoin farm issue (yes I'm aware it's on FAQ)

I know this issue is on the FAQ and it was questioned before! So I'll try to be brief.

I saw the FAQ and 2 threads and googled about the bitcoin time issue but really couldn't find a couple of things I'm in doubt with.

1 question - So what as I saw any mod that affects bitcoin farming time will cause an issue where it tells there is one but there isn't, thing is I didn't DIRECTLY alter the time. As I noticed the "Crafting" and "Hideout Management" skills weren't going up, what I did was use SP-EFT-ProfileEditor to up the skills gradually "manually". As expected of the skills, they >>reduce time for crafting<< and up buffs. My question is: so not even the skills can, for a fact, reduce the time of bitcoin production??

2 question - Couldn't find this one anywhere too: so the graphic cards don't really reduce the production time at all? Therefore there wouldn't be any point in upgrading and saving/buying graphic cards? Can I just sell them all then?

Thanks in advance, and sorry for babbling in a known issue!
Sorry for any english mistakes too.

Quote from MasonAlex

My question is: so not even the skills can, for a fact, reduce the time of bitcoin production??

Neverming the first question, I learned about the skills through videos, just saw that crafting doesn't affect the time of bitcoin farm. For some reason I'm not able to edit my post. Sorry
Second question remains though