Posting the driver was nice but it would have helped even more for you to post your program that uses it. What you should have is the read waveform in a loop all by itself. Even then, you won't be able to get data from the scope as fast as it get it locally. The read waveform sends an initiate command, waits for the capture to be complete, and then does a transfer. That all takes a finite amount of time for the scope to process, move the waveform to the transmit buffer, and then actually transfer the waveform. You should look in the manual to what the spec is for an ethernet data transfer but I guarantee it will be slower than the scope in free run mode and updating it's own screen. There's no limitation with the driver - there's a limitation with the scope. Much higher transfer rates are possible with a pc-based scope.
