I'm not entirely sure if this is true. I mean, it might be, so feel free to correct me in any part I'm wrong (and I'm truly curious about this stuff).EvilDragon wrote: Sat Jun 01, 2019 2:37 pmIt's Cubase's fault, it's very finnicky when plugins try to do their own core handling.wagtunes wrote: Sat Jun 01, 2019 12:07 pm Here's what I don't understand, and maybe it's just my PC, though as new as it is I can't understand why. When I turn on multi core, especially for something like Diva, performance is worse. I mean dreadfully worse to the point where I can't use it.
So I don't get it. Why do people want multi core? It doesn't do me any good at all.
No issues here on Reaper - toggling MC in Diva reduces CPU load as it should.
In Cubase, the way u-he plugins distribute the load under "multicore" mode is that they try to distribute the whole load equally into every core. I believe that no matter what, at least in Windows, this will always be less efficient than distributing it into one core. I don't know the technical details as to why, it's just what I've seen often - again, I might be wrong with this.
The issue that might arise from turning the multicore on is that effectively, each core will have a lower ceiling until it gets capped (since the floor gets higher). So while something like Diva will indeed run in multicore, you might have a chain elsewhere which will now cap one of the cores, giving the illusion that running Diva in multicore doesn't do what it's supposed to do.
I use the multicore feature in particular with Diva every now and then but I've noticed that sometimes I might have a chain elsewhere with some demanding plugins that wouldn't cap otherwise CPU but it will after I turn on the multicore with Diva.
The only potential issue I see here in which Cubase might falter is that you can very clearly see that multicore mode is far more inefficient and it's clearly something you should not use unless there's a real need for it. So, perhaps Reaper (and others) help with distributing it far more efficiently?
