belltunes
My playback and record I/O are each set at 256.
Under 'Record Latency Adjustment (samples)'  Manual offset = 0, 'Use Asio reported latency' is checked, value = 1265
 
I can usually start recording at a setting of 64 samples. When there are quite a few tracks and the load is heavier I usually have to adjust to around 512 samples.  I usually mix with the sample rate on max.

Thanks for the info. Unfortunately, my system just won't seem to work at those numbers. I've found the "maximum" setting on the "usb safety buffer" in Apollo and 1024 for my I/O playback/listening in Sonar is mostly stable. Every once in awhile I hear a weird noise, but it never gets recorded and, as of yet, I haven't had the audio completely drop out. Keeping my fingers crossed!  

Use Latencymon to figure out what is interrupting. Make sure your Laptop is set to Performance mode in windows power options.
 
most importantly, disable your wireless adapter when recording. wireless is notorious for causing interuptions

mbrogden0504

belltunes
...one other thing. Best to use Intel usb 3 ports.

Thanks, my laptop only has one usb3 port. Not sure if it's intel (and my understanding is you are supposed to use the ports that come with your pc, not an external one.)  

This is important.  USB3 ports often do not play well with USB2 devices. As a rule, use USB2 ports with USB2 devices. Belltunes is saying his Intel USB3 ports work fine with his Apollo.  If your USB3 port isn't Intel, you then that is likely causing your problem. Are you saying your laptop doesn't have any USB2 ports?
 
Also, make sure you have the latest firmware and driver software for your Apollo.

djtrailmixxx
Use Latencymon to figure out what is interrupting. Make sure your Laptop is set to Performance mode in windows power options.
 
most importantly, disable your wireless adapter when recording. wireless is notorious for causing interuptions

I'll check out Latencymon.  I've already set the laptop to performance mode. Haven't tried disabling my wireless. However, I have (mostly) solved the problem by bumping up the Apollo's "USB safety buffer" to maximum.  Thanks for the advice.  

JonD

mbrogden0504

belltunes
...one other thing. Best to use Intel usb 3 ports.

Thanks, my laptop only has one usb3 port. Not sure if it's intel (and my understanding is you are supposed to use the ports that come with your pc, not an external one.)  

This is important.  USB3 ports often do not play well with USB2 devices. As a rule, use USB2 ports with USB2 devices. Belltunes is saying his Intel USB3 ports work fine with his Apollo.  If your USB3 port isn't Intel, you then that is likely causing your problem. Are you saying your laptop doesn't have any USB2 ports?
 
Also, make sure you have the latest firmware and driver software for your Apollo.

The apollo twin uses USB3 -- it can't operate on a USB2 port. And I checked my USB3 port - it is intel, so I think I can rule that out as the problem. Also, I do have the latest firmware and drivers. Thanks for the advice!