MSFS 2020 will not start since today ( 16.07.25 )

Hello TenPatrol.
since my last update, I found on an other topic drived by yourself, this one:

MSFS2020 crashes on startup - #3 by TenPatrol.

it mention that deleting a certain directory in the Nvidia app (NGX) could help.

I first deleted the directory and FS2020 completed its starting correctly.
I tested this for 2 or 3 times with succesfull results.
Then I uninstalled the N vidia app anfd FS2020 still looks to be back to a decent behaviour.
There is anyway a curious effect on my computer:

I use to turn on Task Manager to keep an eye on the Microprocessor and Nvidia GPU status (mainly the percentage of activity) while using FS2020.
Before all these trouble, the average activity of the Micro proc was varying from about 50%
To about 85% and the Nividia device GTX 4060 was at about 50 to 70 percent.
After my last successful experiment,
The microproc is at approximately the same pace or a little bit higher, but the Nvidia in only at 3 to 5% !
I did several change in the video parameters, but it does not seems to make any change in Nvidia activity. do you have any idea on what happened ?

From my almost 70 years old eyes, the quality of the image I got on my monitor is just as before .
My monitor is a MSI curved monitor with 2560x1440 pixels.
Regards,