Quad Capture Latency

I buyed a Roland UA55 Quad Capture and I have the same problem: very high latency, about 30 ms. and over. I have installed ASIO (ASIO4ALL) driver too but latency remain high. It is inusable.
My setup is W7 32 bit, Intel Pentium dual core 2,8 gHz, 4 Gb RAM, 2 Hard Disk SATA in RAID 0 mode, ASUS motherboard with integrated audio board and RealTek audio driver.
With this setup (without Quad Capture) SONAR X1 Producer runs well; latency about 5 ms.
Any suggestions for me too?

Is 64 samples the lowest you can go? (wich is still awesome...)

Here is my result : Win 7 64 Home, i7 2600k, Intel motherboard, 16g mem.

Note : there are some digital noise problem (more at the end).

Sampling Rate : 44100
Buffer size : 64 samples, 1.5 msec

Asio reported latencies
Input  : 6.0 msec, 264 samples
Output : 3.4 msec, 152 samples
Total Roundtrip : 9.4 msec, 416 samples

Sampling Rate : 44100
Buffer size : 48 samples, 1.1 msec

Asio reported latencies
Input  : 5.6 msec, 248 samples
Output : 3.1 msec, 136 samples
Total Roundtrip : 8.7 msec, 384 samples

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Sampling Rate : 48000
Buffer size : 64 samples, 1.3 msec

Asio reported latencies
Input  : 5.5 msec, 264 samples
Output : 3.2 msec, 152 samples
Total Roundtrip : 8.7 msec, 416 samples


Sampling Rate : 48000
Buffer size : 48 samples, 1.0 msec

Asio reported latencies
Input  : 5.2 msec, 248 samples
Output : 2.8 msec, 136 samples
Total Roundtrip : 8.0 msec, 384 samples


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Running Cori Yarckin demo seems fine at 48 samples (I'll probably set it back to 64 samples, 44100 rate).

In comparison to my previous Phonic Firefly 302 firewire interface, the lowest Roundtrip is stable around 17 msec, at buffer of 128 samples, which is a huge improvement. Edit : Re test Phonic, got better result (48 samples) :

http://forum.cakewalk.com/tm.aspx?m=2582602

However, the biggest problem now is I can hear a clear but soft and constant digital noise.....<deleted>


Edit : Noise problem solved :
http://forum.cakewalk.com/tm.aspx?m=2577094

I was checking out the Quad control panel with the "reduce cpu load" turned on.

My previous round trip latency at 9.4 msec (64 samples / 44100 rate) is now down to 7.6 msec.

Running at 48 samples, further improves the round trip latency to 6.5 msec.

Is everyone running Quad / Octa with the "reduce cpu load" turned on ?

ASIO4ALL is a piece of software which wraps WDM drivers and emulates an ASIO driver. ASIO4ALL has been reported to interfere with real ASIO drivers when installed on the same machine. This is why the recommendation to removed ASIO4ALL when using an interface with a real ASIO driver.

From the manufacturer of the audio interface.

Yes, Roland supplies an ASIO driver. The latest drivers are available here http://www.rolandus.com/p...uad-capture/downloads/

If ASIO driver mode is set in SONAR preferences, SONAR will only use an ASIO driver. SONAR reads the interface I/O names from Windows. Windows gets the names from the driver.