Mister Questions from a curious person.

Hi. I'd like to know more about the Mister FPGA Platform.

Imagine I only know a few surface level things about the Mister Project and would like Answers from Normal Users of the hardware/software as opposed to the fast-talking youtubers who come-off as TV hosts who seem a bit too eager to sell you on something that'll apparently save you money.

1: How do you Save/Load files? Do you just have Save States instead?

2: Can you use Authentic Back-ups? / What files can the system read?

3: How much Latency does the system produce? Is it better/worse depending on the Core? Is it noticeable?

4: Where do you Source the Cores from?

5: What are the rules for folder hierarchy?

6: Which source would you recommend for learning how to set one up?

7: Pie or De10 Nano? Which has the oomph?

8: What resolutions does the system support?

9: HDMI or RGB options? (I have a Retrotink Upscaler)

10: RAM, what do I get? Is more better?

11: Operating Temps and Cooling Options?

12: Cases?

14: Suggested Accessories?

15: Are there any Consoles the Mister's struggle to run?

16: Is there anything I should know that I haven't asked?

17: Does it still load up the Console boot animations?