I moved from Nuendo 4.3 32 bits to Nuendo 5.51 32bits on a Win7 64bits system (i72600k, ASUS P8Z68-V PRO, RME HDSP MADI, 4 UAD-1/UAD-2 Duo).
I was doing fine with large sessions on Nuendo 4.3, using tons of UAD plugins (almost nothing native) with a 64 sample latency without a single dropout or ASIO spikes. At first I had problems, then I disabled the core 0 (letting Nuendo use the 1, 2 and 3 core of the cpu).
Since I loaded the same sessions on Nuendo 5.51 (and 5.1), there’s a lot of CPU spikes, and no options can make it work (multithreading ON/OFF, multicore, steinberg energy thing, disabling some core used by Nuendo, auto-affinity, etc.). I still load the same sessions in N4 without any trouble. So it’s the same computer, the same session, and using the updated release of my DAW, I have really lower performances ?!?
Is anybody with a setup like mine is having troubles ? Is there a fix ? It seems to be the same problem that some user have after going from Cubase 5 to 6 (http://www.steinberg.net/forum/viewtopic.php?f=19&t=9423&start=75#p110177)… After extensive testing it seems Nuendo 5.51 doesn’t like the UAD-1… As soon as I use 50% of the power it begin to spikes a lot, the only way to resolve it is to rise the latency to 256.
Help ! I can’t use the 5.51 with this problem ! Thanx