This is similar to Fairphone’s situation. For the Fairphone 5 they just use an IoT chip with long term support from Qualcomm enabling them to give at least 5 years of feature updates and 8 years of security patches.

Farming Simulator 22 was the game that ran the worst on my PC. Performance was even worse on lower settings and the graphics weren’t any good. I had a Ryzen 7 5800X and RTX 3080. Luckily I just played it using Xbox Game Pass and didn’t buy it.

Not really a recommendation, but there are some professional displays for the commercial market that can have removable modules for its content. They are more expensive though and they’re more focused at being run 24/7 than looking slim.

Here’s a great video on one that uses a raspberry pi compute module: video