A:AnswerIt does have a 5400 RPM hard drive and I have owned laptops running 7200 RPM. I have found that the hard drive has been quite efficient. Speed has not been a problem.
A:AnswerNo this will not run mid to higher end games well if at all. You will want to look for a laptop with a dedicated or discrete graphics card like Nvidia to play higher end games.
A:AnswerThis laptop has a replaceable battery but it requires the whole bottom panel coming off. The battery shouldn't need replacing for 3-5 years depending on proper battery care.
A:AnswerPossibly. While I am not familiar with the Elgato's recording requirements it SHOULD work. I would be careful though, the processor might not be able to keep up with the file transfers.
A:AnswerThis laptop has DirectX 12 which is backward compatible to DirectX 9 theoretically. Depending on which version of Visual Studio you are using Windows 10 may or may not work well with older versions.
A:AnswerThis model will be more than enough. I run Quicken on it and access various websites. Your intended activities are not very intensive. You could probably "get by" with a slower processor and less RAM but if your needs could grow in the years ahead this laptop will accommodate future activities.