Hi,
an application hangs after opening or opening a file takes very long time
Please check this link to see whether it's helpful Windows 10 Often Freezes When Saving or Opening Files
is there a good tool next to the process monitor
Process monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity.
If you don't want to use it, you can use task manager, resource monitor, performance monitor and event viewer to analyze.
Third-party tools are not recommended because they might couldn't show how the system works exactly. But you can choose your preferred tool, Five process monitors that go beyond Task Manager.
Please note:
The mentioned product is owned and operated by a third party. Microsoft has no control regarding to the product's performance and reliability.
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