Wow, your latency results are much better than mine with a Focusrite Scarlett 18i20 connected via USB 3.1 [Thunderbolt 3]. Something that many people using USB interfaces don't realize is that if you have multiple usb devices or hubs connected to your system, it uses all of the available bandwidth on the Universal Serial Bus. That's why I opted to use my only USB 3.1 port for the 18i20. Windows 10 wouldn't even recognize the Scarlett until I disconnected all my USB devices. Even with just my 4k webcam connected, the camera wouldn't work because the Scarlett was using all my bandwidth. The USB 3.1 port has it's own dedicated bus so that fixed the problem there at least. Unfortunately my ASIO latency is 12.5 milliseconds for both input and output using 551 samples. When I increased the sample to 1024, the latency increased to 24.5 milliseconds.
Anyways, the last thing that I wanted to mention is that Windows WILL recognize a max of 4GB of RAM. If you don't have a video card with dedicated graphics memory then oftentimes the OS will reserve 1GB of your physical RAM to run graphics. A semi-workaround might be to increase the size of your paging file to act as virtual memory. This will allow a place for the memory usage that exceeds your available RAM to go. Here's the catch, virtual memory is limited to the speed of your hard drive, so when your system does use it, there is a drastic difference in speed. Upgrading to a solid state drive might help. They are 2.5" which fits perfectly in laptops. SSDs don't use paging files (at least you aren't supposed to) because they are always in a solid state of either read or write. I'm sure that people may disagree with me, but I do actually have a Bachelor's in Computer Science with Specialization in Computer Security so I know one or two things here and there. As for Audio Engineering, I literally just started last week. I know absolutely nothing on the subject. I bought my computer 3 years ago so I didn't go out and buy something fancy. I don't use Mac computers due to my own personal issues with the company, however, I figured out a way to run the latest macOS build in a virtual machine just in case I need to use a program that is only built for the macOS. Also, you have a Core 2 Duo which does support a 64 bit OS, and honestly, your performance will increase drastically if you were to switch. Just some ideas.
I would love to get some more ideas as to correcting my latency. I'm also having trouble with the WDM driver. I can't even switch to it in Sonar because it causes an instant blue screen of death every time. So I'm forced to use ASIO. This is way out of my realm as I do not understand ASIO or WDM. The only reason that I tried switching to WDM is because Sonar is only showing half of my inputs, but unlike other Scarlett users, my list of inputs and outputs do not say "left" or "right" input so it's hard to believe that it is only showing stereo connections, although, it is detecting exactly half of the inputs and outputs. It's not like I will ever use all of my inputs/outputs because I'm just operating out of my bedroom, as I was injured badly in combat and I can no longer walk so I'm in my bed 24/7. I have set everything up around where I lay. Anyways, I said way more than I intended. I hope that you stay well.
Take Care,
Jason
**Crap! I just now realized that this thread is 7 years old so it probably won't help anyone. I'm going to post it anyways because I took a lot of time to write it. Sorry everyone.**
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SONAR Platinum (23.7.0) Build 37 [07-2017]
Focusrite Scarlett 18i20 (USB 3.1 [Thunderbolt 3])
Audio-Technica ATH W5000
Alienware 15 R2 Laptop
Windows 10 Enterprise x64
Intel Core i7 6920 Skylake (8 cores) (4.1GHz [Overclocked],1000MHz FSB, 6MB Cache/1024MB L2 Cache)
32GB DDR4 2133 MHz RAM
1TB Samsung NVMe PM951 M.2 PCIe SSD (Boot/Programs)
1TB 7200RPM Seagate HTS721010A9E630 (SATA 6 Gbps) [Storage]
5TB 7200RPM Seagate SCSI USB 3.0 Expansion Drive
NVIDIA GeForce GTX 980M (4GB GDDR5 @ 2500 MHz) PCIe 3.0
Intel(R) HD Graphics 530