Anyone out there using this combination?
I would like to share some experiences if possible regarding performance.
Thanks in advance.

Komplete 9 here plus Platinum.....  sorry.

Hello,
 
I use this them both... What's up?

I tried Rounds today for the first time (it's the first Komplete 10 instrument i've tried, I am a new user) within Cakewalk. I was just playing a few notes on my midi keyboard auditioning the sounds and I am getting intermittent clicks and glitches in the audio. I am wondering what kind of performance others are getting. For example, how many Komplete 10 instruments can one load before running into issues.
Thanks for any feedback.

Hello Percepto,
 
Short answer is.. It depends.. Each library or instrument will have varying sample, effect etc to load into memory. With said, you specs look pretty strong and should be more than adequate.  But let's discuss Realtor and in particular the new entrants.. Rounds, Polyplex and Kontour.  They all hit resources pretty hard. When using I tend to up my audio buffer size to at least 512. I also turn off other items not needed generally. This includes wifi, nics, Bluetooth and the like. You can see how they affect Sonar in the performance indicator in the Control bar.  Bring up the app and turn it own and off from the interface. The hit is immediate. In short I would begin by adjusting your audio buffers and turning off obvious services (as mentioned) to see if this improves things. They are good inclusions but "greedy"..

Komplete 9 Ultimate user here. I don't know about Rounds but I've had no performance problems with NI synths in general. I often have upwards of 3 or 4 instances of Monark (very CPU intensive) as well as many other Reaktor synths and effects, plus Massive, FM8, Kontakt etc. All runs smoothly without glitches but then again my system is a beast. The only problem I've faced is that occasionally, some NI plugins have lost their settings when a project loads. Mainly Reaktor and Solid Bus Comp.

Thanks for the helpful inputs. It must be how I'm set up then, as my system is very similar to yours (sharke) and I'm glad to make the acquaintance of another Babyface user!
Is there some setting on the Babyface that I need to look at?
I will try upping the buffer size as LunaTech suggested and also, (stupidly, I know!) I was online when I tried it, so I will switch everything else off and see how it goes.
I'll try these things tomorrow and report back.
Thanks again.

You shouldn't have to up the buffer size, unless you're at 48 samples or something like that. Generally 128 should be fine unless it's a particularly heavy project. You shouldn't be getting clicks and dropouts just from one synth. What about your sample rate? I generally stick to 48kHz. Is Rounds a Reaktor based synth? If so you can change the sample rate that Reaktor works at in the Reaktor settings. Although I have to say, I often run Reaktor synths at 96kHz without problem. 
 
Have you tried the other synths in Komplete? If they're all fine then at least you have it narrowed down to Rounds. It's worth asking on the NI forums as well although they are notoriously quiet. 
 
Honestly, with the system you have and the RME Babyface, you shouldn't be having problems like that. I'm not sure how you check latency issues on a Windows 8 system because DPC Latency Checker, which is the standard, does not report correct values on Windows 8 (this freaked me out on my new Windows 8 box when I first tested it, before I knew that DPC wasn't compatible with 8). I can generally have browsers open and be downloading stuff (I backup to a cloud constantly) with no cracks and pops in my audio. The only thing I can think of is if you have WiFi enabled - that's a notorious crackle causer. 

Windows has what I call "vampire processes" that think they're important but aren't needed and interfere with audio. Wi-fi is a common example, as are extraneous drivers, but the more you can isolate and disable, the better.

All in all ultimate 10 is awesome , but as mentioned Rounds which is a great vsti But it's a cpu hog.. I would have to say with all my plugins rounds dose the most damage to my cpu.