My dealer has told me one of the big changers you can make to benefit your system is to put your mono blocks right next to your speakers and run a really short speaker cable… it tremendously improves the speed and accuracy of the speakers. I know this guy really well and have for 20 years. He installs really high end systems all the time. I take what he says as gospel. But you have to do the shortest possible… think a foot or foot and a half.
I have monoblocks right now… unfortunately they are on loan and I don’t have any really short speaker cables. Or I would try it.