I bought aspire V3-574G-54VY one month back. It is running on windpws 10 64-bit. There is one issue with the Qualcomm Atheros QCA61x4 Wireless Network Adapter. Whenever I update the driver to version 126.96.36.199 I face extreamly slow internet. But when I rollback to previous driver version i.e. 188.8.131.52, the speed is proper. Can anyone help me regarding this issue as I am not able to identify whether I have a faulty laptop or not. The service center even replaced the wifi card but still the same issue is coming back. Thanks in advance.