PAX X-Fi Drivers cause severe lag, crash programs The PAX Drivers have been causing severe lag on my machine for quite some time; at least a year. I was hoping this would have been found and fixed by now but I see the issue is still present with the latest drivers. I decided it would be a good idea to open a thread since other users may encounter this problem and not know how to fix it and it could be related to a specific hardware configuration or Robert McClelland may not even know the issue exists. In short, the High Definition Audio Device entries in long hangs if they are not disabled. Any program which polls the audio devices is also effected by the hang. This causes crashes of many programs and very long hangs in others. Disabling the entries for High Definition Audio Device instantly stops the hanging. Edited for clarification.