[ijsbeer79]

Is there a difference in performance between this build and OpenELEC Frodo build?

Only a 'tiny' bit... Performance wise these builds are great! BUT if you are not familiar with these builds: these are test builds, meaning you will be asked to test stuff and hence these are not stable builds.
If you want stability you should use Frodo. If you want a more speedy / latest version: try the Open Elec 4.0 Beta 2 (or 3?) version (found on the OpenElec site somewhere). Use these builds only if you know what you are doing and willing to spent time to test stuff and/or excpect (minor) issues.