Supercard DSone V3 help

I have a few concerns with my Supercard DSone V3
First, after I installed the new SP8 my card started to load games very slow, like (2-3mins to load a game). So I tried reverting back to the old SP7 which I was originally using, but the same problem still occurs.
Second, the cheat system seems to be malfunctioning, I made sure that the cheat file was in .scc format, and was named after the rom number, however it does not activate. However it works for some games and not others, for example it works for Mario Kart, but not Pokemon Platinum.
Due to my card being Chinese and I'm unable to read Chinese (my uncle bought me it) I made sure to set the option of "set patch" so that every box would be the same for each game, and follow the consistency.
If you have any suggestions, or solutions please post them thanks in advance =).

Try backing up and reformat your card. How many games are in your cheat database?

I'll try reformatting my card, I haven't had this problem before.
I have around 3300-3400 .scc cheats in my cheat database, does that affect my performance?
Thanks again.

I assume so. You can try deleting some game entries from the database using an Editor.