[Fire HD 8 and HD 10 Original Android Development] chairmanmiaow:
Firstly thanks for the new ROM - for a single user build I've had no problems whatsoever on the several suez units I've setup so far. I don't use or care about the camera, chrome, netflix, speaker or other problems that other users have reported so overall it's a big improvement over the previous ROM or (shudder) the stock Amazon ROM. Even with Magisk + lots of modules and without bothering to disable Google Play Protect it's been fine for me. The only thing I found that wouldn't work is installing Google Calendar for some reason and that's not an issue.

That however is for single user builds: the first suez I tried to setup with multiple users is the complete opposite. Totally unusable. So far I've combed through this thread and absorbed the hints and have tried multiple different methods and tricks to make the secondary and tertiary user accounts work acceptably but with no luck so far. I think I'm going to be out of luck sadly but perhaps someone can point me in the right direction?

Specifically a clean install of lineage-16.0-22020301 + open_gapps-arm64-9.0-pico-20220215 (with or without Magisk, built-in root or Play Protect enabled) again works perfectly for the first user but any additional user accounts are completely borked. Google services are buggy and glitchy and often require multiple sign-ins to "take" during initial login (again, with or without the options above - I've been testing with all of them disabled though). Even after successfully getting a secondary user signed in with Google during initial setup I keep seeing further prompts from for example the Play Store, Gmail or Google Photos apps when opened for the first time that starts the whole Google login process again before working. Eventually it will "stick" though.

However even after getting a secondary user account finally - barely - working there are more problems. Biggest is that secondary accounts are objectively glacially slow in operation compared to the first account. Installs crawl by, the interface glitches and pops and apps take forever to pop open. Firefox for example operates at perhaps 25% of expected speed, and that's being conservative! Worst of all once a secondary account is enabled the same slowdown suddenly starts to effect the primary user account as well although weirdly not to the same extent. Excuse my rough estimations but I'd say after enabling any extra user accounts the primary account instantly slows down to approx 50% of the speed it ran before - noticeably faster than the secondary accounts still but very pronounced. This slowdown persists after a reboot, dalvik/cache wipe and even after completely purging any secondary accounts: the initial account never "recovers" if you see what I mean.

Obviously that alone is enough to completely nuke any chance of using the suez in multiuser mode but there are way more issues on the secondary accounts. Without Magisk there is no way (that I've found) of enabling root access for the secondary users which for me is a complete no-go. No proper adblocking, no vanced, etc. Even developer options - which as I understand it, should only be set on the primary account and then all secondary accounts inherit the same settings - don't work for the secondary accounts. So if I set dev options on the primary account for advanced reboot menu, show terminal, etc I'd expect to see them enabled on the secondary accounts as well: this does not happen.

It's entirely possible that I'm just stupid and am missing something simple in which case corrections, hints or naughty hacks would be greatly appreciated. Happy to grab logcats or anything if it's helpful (I did have a quick peek at them obviously but meh, I'm not a dev).

Executive summary: as a single user tablet this ROM + opengapps + Magisk is excellent and by far the best experience possible on the suez. Multiuser is however completely and totally broken for reasons currently unknown to me at least.

Has anyone else even tried setting up multiple accounts? By the way I can at least rule out it being a bad unit - I have stacks of things like the suez lying around and the first thing I did was try a different tablet. It is 100% reproducible for me.

Cheers