Decided to Edit this whole thing

Listen to this one -

I bought an ubiquiti SRC card, put it into my cousins laptop, we put in a lot of codes just to test it out and after start injecting, we get loads of data, everythings fine

Now i put it into my laptop, set it into monitor, start the aireplay-ng -3 crack, after a while gets ARP requests and gets a large amount of data but then it all freezes, i have to ifconfig ath0 down - then ifconfig ath0 up, and run airodump again to get it working.

Why does this happen? is it my laptop, is it a setting i didnt turn on

Please help someone, thank you