Help /vp/

Having issues with my downloaded version of Pokemon X. It's keeps freezing on me an resetting my gameboy when I get to lumiose city.

Sometimes I can skate around for a bit, other times it happens in seconds. Tried downloading the patch, then tried deleting it an re downloading it. Iv tried mashing home like I read, but to no prevail.

I didn't save in the city, I hadn't saved since the town before the first time it happened. Any thoughts? It's my first play through and I was thoroughly enjoying it before this...