Voted there:
https://www.gog.com/wishlist/galaxy/launch_games_as_admin

Need this as I have an issue with few games and it looks like running those games as admin is a workaround for this issue.

Here is the description:
https://steamcommunity.com/app/839770/discussions/0/3122659822728402202/

the games you don't have issues with are one with built in control drivers so it is most likely a driver issue i.e, the drivers in your system are behind it but you don't give a lot of details so more testing would be needed

anyway 'run games as admin' is a pointess thing to vote on as Windows does not allow that by default so Gog can't give it to you

how to test = ask a mate to install one of the games you know gives you an issue then play it both your keyboard and whatever your mate has i.e, try one then the other to see if you still get the problem

Thanks for the reply.
Yes I do not deny there is something on my system.
Especially I think I played 2 of the games on my previous PC with no issue, but that was more than 1 year ago and Windows / drivers /... have evolved.

I did not give details because there is so much ..., but:
* I uninstalled/reinstalled Logitech drivers
* I uninstalled/reinstalled LG hub softwarte
* I removed USB devices from the device list to let windows reinstall them
* I checked the firmware of the keyboard
* I updated the bios
* I tried by deactivating softwares / services that could lead to issues like: anti virus, Nvidia geforce, different services themselves.
* I tried connecting to other USB ports
* I tried 2 other keyboards (only Logitech ones, I do not have other brands or "access" to other brands).
* I deactivated windows "fast start" (or is it "quick start" ?) ... which solved another problem I had.

And I probably forgot a lot of things.

Regarding starting in Admin, indeed I thought it was feasible as I found posts talking about starting Steam games as admin.
But actually the trick is to set up the exe in compatibility mode.
I will try this trick with one of the games at once.

the details we would need are your system data i.e, Windows10 pro, a Rzyen 5 and 32 G ram not a list of what have you tried so far

also just to be clear, you can [sometimes should] always set a game or other software to run as admin but that post you linked to is asking Gog to make that the default setting and Windows does not allow that i.e, you can have it set to 'run as admin' if you like but you have to do that yourself