have you removed all tools like Asus Sonic *** ( note: there is similar stuff for older msi boards ) and checked that in case there exist a service ( windows services ) called “Nahimic” is disabled ?
If so, the I have only in mind the windows virtual memory. Is a guess and is normaly not related to 409, but can have strange effects and your system have ‘only’ 16GIG RAM. Have you checked the current pagefile size ?