What are the home hosted bottlenecks that can limit the user experience?

[kd4e]

How many users can a 'home' server handle?

Example: Dell OptiPlex 7050 i5-7500 64G RAM dual 372GiB SSD's on a static IP with 300 M Up/Down fiber service.

(Notes: Content will be mostly text, some embedded images - 600 x 400 pixels typical, and eventually some audio content.)

Thanks.