Comentário oficial
Sorry we missed getting back to you before your gig.
The issue with the digital sigs is your version of Windows has our signature as "Pioneer Electronics" but all of our drivers are now signed with "Pioneer DJ" - so there is a mismatch. If you have applied all of the latest service packs and still encounter this problem, please disable the driver signing and it should allow you to install it.
Any performance issues are likely due tot the age of your computer, especially if you're still running Windows 7, which is almost 9 years old - Microsoft ended its mainstream support almost 3 years ago.