welp i hope i don't sound that much of an asshole when it's me giving the condescending bit 
@thor9023 when you are seeding, your max speed is only a tiny bit of the equation, the person downloading from you are often splitting their traffic throughout multiple connections with several other peers, for you to seed/download at very high speeds you need to be lucky to connect to someone with a matching bandwidth.
Having hundreds or thousands of active torrents sure increases your odds of eventually seeding a small portion of them to others, but realistically it depends a lot on another simple concept: demand.
I'll take myself as an example. My ratio have been very consistent, sitting around 1. Because I don't really care for increasing my ratio, I don't want to use my own storage as a CDN for other people, storing a huge amount of porn that I don't like and will never wank to. I only download what has use to me.
What that means: most of what I download is what I search for, more often than not it is old stuff that have been on the site for years. There rarely is demand for those torrents. If you download an old torrent, you can expect to never help seed it at all, the odds of someone downloading are very low, and if it happens it could be in a moment when you're not even online to help.
In simple terms, whenever I download something that is not freeleech, I am aware that I will most likely never recover the downloaded bytes through seeding those torrents. Instead, most of the upload credit I get is from:
1 freeleeched torrents
2 self-uploaded torrents
So if you are on a run to increase your ratio, you must start to download only torrents with high activity. Those are torrents uploaded recently or that went on freeleech mode.
This is some sort of gambling, because there will never be any guarantee that you will seed anything you download. Often times people hurt their ratio attempting to download massive torrents only because they have high activity. Not wise... Instead, focus on downloading only a small portion of those massive torrents, you'll still be able to help seed while having a lower chance of ending in ratio debt.