I’m testing a very busy project in Cubase 10.0.5 and I’m afraid I’m not seeing a difference here (5960x, 8 real cores). This particular project still causes a lot of real-time spikes if I try to play it after activating hyperthreading on BIOS.
With hyperthreading deactivated it works just fine, no real-time peaks, as you can see in the image below.
In both cases ASIO Guard is set to “Normal”, and my RME AIO is set to a latency of 128 samples. So, unfortunately, no improvement here after updating to Cubase 10.