VJAY crashed & Ipad air (latest version IOS 8.1.1) with the same clip mixing with WEGO2

I have the same clip on each part of VJAY with wego2, I haved disabled many options of ipad to get free memory (around 460MB free)…I have when i run the 2 clips with fader around 12MB free and vjay freeze with apple TV …
it s very hard to play with this problem
may you have suggestions?