How to eliminate CPU load while running compass watch?

Question

ruby

Good afternoon.
I have a problem. With the celluloid gem installed, I run the command compass watch. At the same time, the ruby.exe process starts using ~ 50% of the processor time, and the compass noticeably slows down. Without celluloid ~ 5% CPU. Celluloid is needed in the dependency chain for gem'a guard.
What could be the problem?
OS: Windows 7 x64, Ruby (Tried 2.0 and 2.1.5, x64 and x86), celluloid (0.16.0 and some of 0.15.x), compass (1.0.1 and 1.0.0)
UPD :
Tried on vagrant (Ubuntu 12.04.5). History repeated itself.
UPD2 : Experimented a little more.
The effect described above is combined with celluloid-dependent gem listen. If you do not install listen, but install only celluloid, then there is no increased load on the processor.

Answer 1

Running ruby ​​on Windows. Try running it inside a VirtualBox container.
This is very convenient to do with vagrant.