heavy pbidesktop.exe processing

Hi

I traced an issue i faced with high processing consumption of pbidesktop.exe

My config :

    - Intel Core i5, [email protected]

    - RAM 8Go

    - os 64bits / Processor x64

    - PBI version = 2.62.5222.601 64-bit (september 2018)

    - allow data preview option deactivated

So when I run a pbix file (not a blank one : size 200 meg), the process PBIDesktop.exe:
    - soars during opening at 90-100% -> this is ok
    - then it goes back down and flaten at 50% without me doing anything in the tool

In the past, on my old computer (Windows7), I observed that kind of greedy process but it was the "Mashup Evaluation Container".

Now on Windows10, with a late version of PowerBI, the Mashup process seems to be ok.
But the PBIDesktop.exe bothers me.

So this morning:
    - I did run my pbix.exe
    - the processor got stuck at 50%
    - my computer fans go like crazy
    - don't like that, I close powerbi
    - the processor immediately drops below 10%
    - I restart the same file
    - the processor goes up to 50% (while I still do nothing with the tool)
    - so i wait (complaining for my fans)
    - after 20 minutes (!!), it finally settles down and drops to 10%
    - last check : close powerbi and restart
    - the process remains at 10% (pffeew)

So it's like it's performing some kind of optimization or I do not know what.

As long as it doesn't get to the end, the task runs.

And when finished, it eventualy calms down.

Do you know what is going on ?

I don't have that kind of behavior on all my pbix.

Thanks !

Stephane