I searched but could not find anything on this. I know that X3 is a massive system compared to any of the microhosts for Cake synths. That being said, should there be a drastic difference between the two when it comes to pressing a key on my controller and hearing a note sound? MicroHost = instantaneous, X3 = unplayable delay. 
 
My xface is a Line6 UX2, I have a reasonably fast machine.
 
Thanks for your thoughts.
 
 

Which driver are you using for Line6, ASIO, WDM etc. And what is your latency buffer setting?
 

The Line 6 does not seem to have midi ports, so that implies your using a USB midi controller. Therefore the drivers of the LIne 6 should not be a factor, The drivers that come with your keyboard will be,
But this sounds like a classic case of midi delay caused by having certain plug in effects running, for my system I have to by pass any of the LP64 plug ins or I'll get delay. 

Not really enough info for us to go on. Telling us you have a fast computer is not saying much. I have an insanely fast computer that struggles if the wrong drivers are enabled. Do you have similar settings and drivers for microhost and x3? Are buffer settings the same?

@emwhy - asio4all, 512
@johnnyV - No plugs at all, brand new project, totally clean.
@dubdisciple - everything the same between MicroHost and X3.
 
Just seems logical to me that X3 could have a path for processing time sensitive midi that would be closer to the MicroHost. As it is I have to write in the MicroHost and transcribe in the PRV. 
I've gone through the disable HD Audio Tip/thread from Craig. No joy. I'm at 32ms, 1400+ samples

You should uninstall ASIO4ALL completely. I believe you can download ASIO drivers from their site. Even if there aren't ASIO drivers WDM will be better than ASIO4ALL which is merely a wrapper.

And please tell us your PC specs (see my signature).

Thanks.

Ok, strange things be afoot.
 
Opened X3... unplayable at normal poor latencies. Closed it and opened MicroHost (MH). Lovely, snappy as all get out.
 
Somthing said to reopen X3 without closing MH. Now, it too is beautiful! And when I go to Pref->Driver Settings it tells me my funky 32ms 1400+ has changed to 11.6msec at 512samps.???!!!???
 
i'm afraid to turn the machine off now...
 
But wait, I figure out eventually that I wasn't hearing X3, I was still hearing MH. X3 wont' make any sounds. Oh, well. Driver sharing is on but having the MH open messes up X3. But those latency numbers show me it can be done. Still don't understand the difference....
 

Specs are: Dell Precision 690, dual dualcore xeon's (8 logical cores) 3ghz, 12 g mem. Win 7 ultimate 64bit.
 
 
 

ASIO4ALL is not the best option, but still I have not seen a card which can not do 192 samples with it under SONAR (on computers which you will not consider to use even for reading e-mails).
Still it is better to get the original Line6 ASIO driver first.
 
How do you come to 512? Do you have "cracks" with lower settings?
Please wait a bit after SONAR startup till tests. Especially in case you have "every time VST scan" enabled.
 
1) May be stupid advise, but I still have to mention that: check that you really using ASIO driver model in SONAR.
2) Check that you use the same settings, the frequency and the resolution (44.1/48/96, 16/24).
3) Also check that all other audio devices are disabled in SONAR.

before opening either host, run the asio4all offline settings to set the buffer (512 is default i think), and then close the settings panel; that buffer should then be the setting the host picks up
good luck!