oh i know that only ezusb.sys can edit cause the source code.
But you may want to know me about cyusb.sys is fully enough for speed.
I just trying to enhance driver's bandwidth to edit "timeout" and "maximumtransfersize".
Is this possible think?
Have you designed your host applicaiton efficiently?
Are you using synchronous or asynchronous data transfer?
Using async transfer and queuing the begindataxfer requests helps improve the application speed.
Try and have a look a our streamer application code.