I don't know if this is a duplicate, so please remove if it is. What I am hoping for is a restriction selection for user/friend quality or bandwidth settings. It would be really nice to limit the highest quality stream that a user can select using their account. Let's say I only have 5mbps of up…

This is probably the most popular one: https://forums.plex.tv/topic/80857-popular-server-side-speed-limitscaps-for-sharedsubscribed-users/?hl=limit

Limit Friend Quality/Bandwidth Settings

Topic		Replies	Views
Limit Remote Stream Quality & Mbits per User Remote Access server-linux	3	286	July 6, 2020
[FEATURE REQUEST] Throttle friends/users streaming limits Feature Suggestions	3	319	June 10, 2021
User bandwidth/quality limit Feature Suggestions	2	164	September 12, 2020
Limit video quality per user Feature Suggestions	2	187	April 24, 2019
User bandwidth limitations! Feature Suggestions	5	94	June 10, 2021