Because the computer (ACER Aspire V5-122P) was running slow and was quite messy, I reinstalled Windows 10 and installed all the updates recommended. I also installed Avast and MalwareBytes.
It is still running slow and I can see it is because of the infamous 'system and compressed memory'. As suggested by magicandre1981 in a related post, I downloaded the Windows 10 SDK and used the WPR to create a file which I tried to analyze using WPA. I read a bit about it but I end up with unknown processes. As my experience is very new and superficial I was wondering whether it is indeed possible to find the name of the process. This is my only computer and I need it to work so I am desperate to try anything.
More details: I looked Computation>CPU Usage (Precise) and then proceeded to find the thread and process with the highest %CPU usage but there is no process name.
I provided the file so you can see for yourselves.
EDIT:
1) I created a new trace and the CPU sampling data is also missing after the start.
2) I have noticed that the "system and compressed memory" process is oscillating very regularly.
3) No high CPU usage of this process happens when I am in Safe Mode.
Another .etl file using the command line this time.