Hi everyone, I've been using this card for about 6 months now and recently experienced artifact (cross-check white boxes) and screen lock down when I play games. It's fine if I put the clock back to default but would prefer it functions as said on msi's specification. Bought from umart but I would prefer to RMA my card with msi. I have already got RCA number but not sure which post service should I go with. Can anyone share their experience and recommend an option for sending the card please? I'm thinking about using Registered Post or AAE but welcome any other suggestion.