Give it a chance. Jetbrains products are nowhere near as slow as Eclipse.
Edit: used Eclipse for 6 years, but forced to switch from Eclipse because project grown to a degree that Eclipse can't open it properly (lot of maven cross-dependencies). Another thing: Eclipse 4.x really dropped quality bar - performance is terrible, unstable (compared to 3.8.x).
Please use this instruction on how to report such problems: https://intellij-support.jetbrains.com/entries/29983118-Repo...