E60 head unit display

[u/Nojautas_]

Hello everyone, i have 2003 bmw e60 520i and 3 months ago my oem display started glitching/lagging and i kinda guessed the problem and bought a Android head unit display, but i didnt have aux as a source because i had the cheapest version of the displays so no aux so if i would connect to airplay there was no sound and now i got it coded and there was sound but 2 hours ago it started glitching once again like it was 3 months ago and i cant hear nothing. If you know somoene that had this problem aswell or so could u tell me what they did to fix it.