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Yes, the entire performance was a lot better, recording into my empty partition of the internal hard drive.

My external usb drive even defragmented caused a bad latency and noise due to usb communication.

Another useful thing: when you create a project it's absolutely necessary to save it into a folder of the internal drive, and then record. Sometime i start recording before save the project, and that causes noise and glitch too!

Try out and let me know.