my mouse and keyboard drivers were detected and installed when I plugged them in.  I now believe they are
just fallback drivers? ones Windows puts in place if no dedicated driver's detected?  because I never went on the brands site and got any drivers for both mouse and keyboard.. everything works fine though,
They both are pretty basic peripherals, no fancy additional buttons, etc..
Ill look into those to see if any lag issues were present, and to get the actual drivers.
- Stop disable WLAN driver (my external Rosewill Wireless adapter) ill stick with my Mac Air for browsing.
- I mainly put Boost 11 on instead of Concrete because it was more accessible.  Ill stick with concrete now.
rearrange and customize my vst layout,  stick with my favs ;)
- Start my projects with the master volume -6db - 10db other than just 0db ( which I usually did ).
 
something I was wondering is if my Nvidia card GTX660 TI, my monitor setup two 22in ASUS LED HD screens, and or my Intel Graphics 4000 Driver was causing any issues.  I don't use my Intel graphics for anything, but the drivers installed.  I don't think Sonar utulizes the graphics card for anything though.. (Cuda Cores or Intels gpu).. 
 
Also I write record my audio to a 7200rpm 1 TB HDD sata 2, but my Sonar and vst drives are 256, 128GB SSD Sata 3.....
 

Bob your getting round trip latency mixed up. 18 is normal for a Roland interface. 
RTL only matters if you are using real time monitoring of things like Guitar rig. 
You will hear no latency at all with most modern USB interfaces because Sonar and the drivers compensate and adjust. But unless your using something like an RME or Lynx interface you use the direct monitoring to track. 
 
It is common practice to By Pass all efxs while tracking. Your timing will be tighter. 
Sonar cannot adjust for latency added by look ahead plug ins. 

With regard to your wireless adapter - you can temporarily disable it just prior to firing up Sonar, and then simply enable it again after completing your Sonar session.  Just right-click on it in Device Manager and click disable or enable.
 
Bob Bone
 

You can trouble shoot your mouse and keyboard drivers (keyboard usually isn't an issue) by starting up Latency Monitor and unplugging the mouse and keyboard.
 
Do things get better?

Watch the drivers tab with the highest latency sorted to the top.
 
If your #1 problem drops off, well then, hunting for a driver for your mouse might be a good idea.
 
I have a logitech mouse and it was a matter of going to the logitech website and downloading the right driver. Took 5 minutes.

I just generically refer to Total Roundtrip Latency - but yes it is the one-way for most instances.  I normally suggest shooting for a total roundtrip latency of around 10 milliseconds.  I should adjust future comments to refer to the one-way.
 
Bottom line is to find an ASIO Buffer Size and Sample Rate combination that end up without lag or dropouts or crackles and such.
 
Bob Bone