Hi have a Canon 60D with a Sandisk 32gb 45MBPS SD card.

If i change my saving option to Raw + Jpeg and shoot at High speed continuous shot (5 fps) it starts to lag after 4 shots.

but if i change to jpeg only and and shoot at High speed continuous shot (5 fps) it works fine.

is it an issue for anyone else or there is a possibility the SD card is a fake.

Thanks