Traditional Remote Desktop Protocol (RDP) can be laggy for fast-paced games due to display latency. For a better experience, many users install low-latency streaming software like Parsec or Moonlight on their free RDP instance.
Check out these tutorials for setting up free RDPs tailored for gaming: How to Create Gaming RDP in azure Free YouTube · FollowInternet
To prepare a "Free Gaming RDP.txt" file, you should focus on methods that provide enough CPU and RAM for gaming, such as the Microsoft Azure or Amazon Web Services (AWS) free tiers.