Just started getting the atiags.dll errors today as well, out of nowhere during the ddos. Not sure if it is related but I also haven't been able to load into a district at all, which I am like 80% sure that it is because of the ddos but who knows if it could be related to this.
EDIT: I was able to get into a district finally, seems it was from the DDOS stuff, I still got the battleye error but ignored it, didn't seem to bother anything.