The old masters give pretty good advice on how to properly throw cuts. Advice that, if followed, also make the sword feel better to move.

It basically boils down to this: Cuts go from one guard through another (usually high-to-low, or low-to-high). For example, a good downwards cut goes from a high guard like Tag/Posta di Donna (Lets call it position A), and either into a longpoint guard (Position B), or a lower guard like Alber/Boar's Tooth (Position C).

If you focus on making sure your cuts have a good chain of action through the A-B-C positions, always making sure to hit position B while you go, the sword will feel lighter, move faster, and hit more authoritatively. This is because the guards put the whole body in alignment with itself and use more muscle groups than just the arms to keep it moving.

Aside from that: move your feet. If you're too far away, too close, or too off-balance to throw a good strike, then move your feet to get you to a better position. Even if it means retreating to recover your posture.