PhpStorm UI sluggishness

PhpStorm is running very sluggish, up to the point that it's basically unworkable. Scrolling in files is slow and navigating through menu's is very slow as well.

I've created a YouTube screencast to demonstrate this behaviour: https://www.youtube.com/watch?v=_Lzw_ADYyW4. I've created an empty project,  even reinstalled PhpStorm, cleared caches, tried different Java version but nothing seems to fix it.

Any ideas?

System:

- MacOS (10.12)

- rMBP early 2015 13"

- 8GB ram, 128GB SSD

Performance summary:

Filesystem Info:
File system is case sensitive: false
Are there symlinks: false
Number of files: 6

System Info:
Number of CPU: 4
Used memory: 72Mb
Free memory: 50Mb
Total memory: 123Mb
Maximum available memory: 2014Mb

Project Info:
Number of opened files: 1
File size (in lines): 181
File size in characters: 4020
Last action: _Undo Paste
Number of injection: 0

IDE Info:
Custom plugins: []
Disabled plugins:[]
Build version: PhpStorm 2016.2.1 Build #PS-162.1889.1 August 23, 2016
Java version: 1.8.0_76-release-b216x86_64
Operating System: Mac OS X (10.12, x86_64)
JVM version: OpenJDK 64-Bit Server VM JetBrains s.r.o