1. Backup Registry.
Go into Regedit and click File and export and choose a place on your computer to save it.
2. Making Registry Change.
Go to HKEY_Local_Machine > System > CurrentControlSet > Control > Session Manager > Memory Management. look into the right panel and locate "Large System Cache" double click it and set the value to a 1. Close out of the registry editor and restart your computer and you are done