event tracing for windows lost 43% during data collection

Hi, As my understanding, for ETW is machine-wide and it collects a lot of events and that can overflow the ETW buffers, when this occurs, will lead to the loss of ETW events. You could see if the following article would be helpful to you: Adjusting Buffer Settings for Event Tracing for Windows (ETW) Alex ZhaoPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.