It works but it's config interface looks borked

Edit: NVM, it also breaks some sites

You're not going to find an antivirus that isn't intrusive because that is their entire duty. However, Kaspersky has a very high malware detection rate compared to other AV solutions

Disable ssao and reduce shadow distance. Also get a potato mod. You might find skyrim legendary edition to be more bearable fyi

It was developed by ID I believe, bethesda only published the game.

Personally, I feel the same way you do about DRM. If you've paid to own it, then it should be owned outright. With this in mind, I would say pirating them wouldn't lose you any moral ground.

Maya. I just cannot get used to the Blender UI

It started as a privacy thing but as I dug deeper, I found that all of the foss alternatives I found were simply much better in terms of functionality & usability