Alesis iO2 buzzing issue on El Capitan

So Im having trouble with my setup. I use an io2 with cubase le 5 with mac. Been using it for a year or two and am just now having issues. First off, The new operating system called El Capitan was recently installed on the computer I use and I have heard this operating system has not been very good when it comes to recording. I dont know if the io2 is not compatible or if its cubase or if this is even the problem. So I got some stuff Ive been working on. I open it to do some work and the tracks are overwhelmed by white noise. There is nothing but buzzing going on. I switched the ASIO driver to built in audio and everything sounded back to normal. Thought my io2 was busted. I checked it with my sisters comupter which also has cubase le 5 installed on it. Everything worked well there. So I thought maybe the io2 is not compatible with El Capitan. Still I thought maybe I was doing something wrong and came to check it out. Now my ASIO driver is not working at all. there is no sound. Everything seems to be connected properly and still no sound. Any thoughts?
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  • Hello David,

    The Alesis iO2 is a class compliant audio interface so you shouldn't have any issues connecting that device to your operating system. It supports El Capitan. Keep in mind that you can't use an ASIO driver on a Mac system too. That's only for PC computers.

    You may just be experiencing some latency. Every recording program has an options, settings or preferences page where the user can adjust the buffer size. Buffer size governs the amount of time the computer is given to respond to requests (for audio processing in this case). The larger the buffer size, the more time the computer has to respond. Large buffer sizes allow the computer to handle more work without choking. This prevents pops, clicks, chattering and skipping caused by an overloaded processor, but at the cost of higher latency. Smaller buffer sizes reduce the overall amount of work the computer can handle, but it can do so with lower latency. Latency refers to the time it takes the computer to respond to input. If latency is high, signals routed into the computer and back out to speakers or headphones may be audibly delayed.

    Refer to this helpful article here regarding how to optimizing your system, improve performance, and manage latency. I hope this helps!
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