Lag abuse in 3s is when yourself or your opponent overuses/abuses a move which is more difficult to parry, block or punish over a latent or lag ridden connection. Using other moves to cover blocked or whiffed moves is also abusive in certain cases. Here are a few examples:
Ken: Blocked Shippu into SRK (Usually fierce SRK > many times EX Fierce SRK), blocked Jab DP into another Jab DP in point blank range. MK crossup abuse.
Ryu: Full screen Denjin. Since this is guaranteed damage against most characters who don’t have moves to evade it and on some occasions, stun, on every knockdown unless you parry it, handling a Denjin player chucking these at you from a distance is a real pain.
Akuma: Spinkick spam (usually HK). Other moves that he has aren’t lag abusive per say, but the timing for parrying them is messed up, such as HP red fireball into Demon Flip sweep.
Makoto: Everything she has? Lol. But seriously though: Naked Dash Punches, dash in throw abuse.
Ibuki: F+MK overhead spam (I could be wrong on this)
Alex: Headstomp abuse.
Elena: Blocked SRK into another SRK on point blank (sometimes EX), Spinning Beat blocked into EX SRK.
Hugo: Body Splash crossup spam, especially on your wakeup
Here are some tactics that I personally find very annoying which are also used by most players I run into on the servers. I usually probably cut my session short with people who play like this regardless of I’m winning or losing:
Ken: SRK spam. Many go unpunished in latency
Ryu: Naked Tatsus
Sean: Full screen Bannana Kick. Should be easily parriable and punished, but goddamnit it’s extremely annoying when I miss it sometimes
Akuma: Red Fireball into HK Demon Flip sweep, Tatsu spam.
Alex: Full screen slashes. Constant jumping HK into throw. Constant Headstomps on wakeup, random SA3
Q (lolol yes, there are even annoying Qs) constant sweeping. Dash punching relentlessly fullscreen against Urien, Chun and any other character that nullifies his dash punches easily with normals.
Dudley: Fullscreen EX Machine Gun Blow. It’s really annoying when you parry like 4 hits and get his by the rest, or when you parry 5. Or even when you get hit by 7 of them!!
Dudley Corkscrew blow into another corkscrew blow or EX Uppercut (I’m pretty sure this is a lag tactic).
Yun: His GJ is incredibly hard to deal with in a latent connection. Alternating between high and low blocking always seems harder when I’m playing online.
Urien: Random Tackles and Kneedrops. Jab Aegis in midscreen after throw, crossup into UB. The timing for quick rising online seems to vary sometimes. Many times delay increases causing the timing to change altogether. It’s annoying having to suffer such heavy damage just because of that.
Non character specific things that piss me off: Excessive sweeping and excessive use of UOH and post round taunting.
Lag abuse was something I was all too familiar with on XBL, since I regularly ran into players with poor connections. Even though I don’t get as many bad connections on servers as I used to on XBL, the level of lag abuse is just as bad there as it ever was on XBL.