HUD: incremental search not keeping up with typing on atom netbooks

An atom netbook can produce approximatly one HUD search result per second. However the HUD search shows the results for searching for each key combination as you type. If you quickly type 7 or so characters, the HUD drop list continues to update for 5-6 seconds after you have completed typing, often giving different lists making it impossible to select an entry reliably until that update process has completed.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.92-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,gnomecompat,move,compiztoolbox,snap,resize,place,imgpng,grid,vpswitch,regex,animation,session,mousepoll,expo,wall,fade,workarounds,ezoom,scale,unityshell]
Date: Wed Feb 22 10:10:17 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111210)
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)