because that gives you a -2 RAM cost to quickhacks against people connected to that network
I have finished Phantom Liberty with a netrunner build yesterday and I was not aware of this.
While we're on the subject of protips, here's how to play invulnerable hacker god:
1) Activate Overclock
2) Upload Synapse Burnout to an enemy, followed by 2 of your cheapest hacks, followed by Memory Wipe that has a base cost of 32.
3) When the enemy is killed by Synapse Burnout, you will get 80% of the cost of the two cheap hacks and Memory Wipe back due to the Data Recycler perk.
4) Due to how Overclock works with Sublimation, the refund is in both health and RAM, so you're actually getting 160% back.
5) If that wasn't enough, Queue Mastery halves the upload cost of Memory Wipe if it's 4th in the queue, but Data Recycler refunds 80% of the base cost...
6) To top it all off, if you're using a tier 5 Synapse Burnout, kills extend the duration of Overclock by 5 seconds, making it last until there's nothing left to kill.
7) You should have enough RAM and health to hold Tab, tag 2 enemies with a queue of death each, then release, wait for them to die, then repeat.
8) If you don't kill a skull enemy with Synapse Burnout for some reason, it's fine as long as the other guy you tagged died; you're back at 100% health and RAM and you can kill him on the 2nd try. Try to tag normal enemies and skulls in pairs, with the normal enemy being first, so the Race Against the Mind perk and Synapse Burnout's inherent buffs can proc on the skull guy based on your missing health and RAM.
You can start messing with this as soon as you get Overclock and Queue Mastery, but you will be capped by Overclock's duration until you acquire a tier 5 deck and a tier 5 Synapse Burnout to go with it. I'd recommend the Tetratronic for the buff it gives to your combat hacks when followed by non-combat hacks in the queue, which you will always be doing.