I'm using a leviathan blade and when I'm attacking monsters its like the second attack pushes them out of range and the last misses. Before it was fine but now the monsters do too much damage and I find myself getting hit because my last attack misses too often.
The last attack of the 3-hit sword combo misses often
I’ve got an old but (sort of obscure?) tip that works for any weapon except bombs.
I personally like to call it the Charge Step;
Generally speaking, the slower a weapon is (including Attack Speed Decrease), the farther you can hold your final strike.
In this case, you attack two times, hold to start charging (don’t fully charge it) , and take a few steps in any direction- you’ll have to test how many tiles you can walk since I don’t have the data anymore. If done right, you can deal the first two strikes, walk forward maybe 1.5 tiles (max distance w/o MSI, probably), and still use your third strike. It works wonderously with two-hit swords.
I learned it from an old friend, but she’s been gone for a while now...
You walk striaght up to those gremlins, look them right in the eye (letting them know you mean business), and then pray softly while you swing that they don't all spin at once and destroy you before you get that 3rd swing. Best thing to do is what nigel said.
As Bopp said this is by design, but if you master the art of the sword it can be completely negated.
There are a few ways around this. The lunge technique that Nigel-Thornberries mentioned is a very useful method, but there are other options.
1) Charge Lunge - As listed before, hold down your attack button for a little bit after the second strike and walk forwards either half or a full tile. This will let you hit the enemy with the third swing once you let go of your attack button.
2) Combo Canceling - Use your shield after your first attack to prevent the second hit from the combo from activating, but then attack twice in a row afterwards. Your attack will remember the "spot" it was in the combo, and you'll perform the third hit in your 3-hit attack without ever hitting the enemy with your 2nd hit.
Do note that using your shield for too long in this method has a potential to "shield bump" the enemy, which may knock them out of range.
3) Corner the enemy. Using attacks or shield bumping, you can knock your foe against other enemies, walls, and obstacles to allow yourself to hit them with more attacks.
4) Avoid auto-target. If your auto-target is on, you may find yourself out of range of enemies too often. Turning this off by default allows you to get in closer to enemies without snapping your aim onto them, which can make hitting every part of the combo easier since you may find yourself closer to them, and therefore within range of hitting them more frequently. This allow can prevent you from being constantly in an enemy's "attack range", as you may find yourself slipping past dangerous areas as you attack.
There are a few other options that were listed already, and some that I'm sure we haven't covered, but this should be good for starters!
Yes, this is by design. It's part of the subtle mechanics that keep three-stroke swords from completely overpowering two-stroke swords. These delicate issues of knockback, pacing, and damage are some of my favorite aspects of the game.
Anyway, you can solve the problem in a couple of ways. One way is to get closer to the target, so that it is still within reach after the second stroke. Another way is to switch from regular attacks to charge attacks. (Another way is to switch to a different weapon.)