Sceadwian
Banned
You have all that and you still got an arc to the PC? or is the mat new? I've never used a ground strap in my life, all you have to do is touch the PC case itself and you're instantly grounded.. Invest in a humidifier for the area or something! If after touching a grounded object for a few seconds you're still able to produce an arc a short timer later something weird is going on.