That fits my finding across Pixel 7 Pro, OnePlus 9 Pro and Pixel 6a.
Having enough memory not to get swapped out seems to be key on Android and not letting Roon be optimised had made it way more reliable for me.
My FP4 is the 256 GB and hence has 8 GB RAM (while the 128 GB has 6). I have never excluded it from optimization though. (I did with ARC for the background downloads)
Once you hit 6GB it seems to improve significantly. I had 4GB (maybe even 3GB) on my first Android phone with Roon and that just stopped working all the time. Memory management and battery management have gotten better, but I still enable it for Roon, out of habit.
I did have it enabled for ARC before I uninstalled it a few days ago as it crashed my Roon core multiple times a day. Without it I kept getting corrupt music downloads
I’m a poor yard stick for all of these serious issues because I never seem to get them 
I have my quibbles with ARC, like the disappearing covers in offline mode (if they still happen, haven’t checked in a while) but never a core crash ever, including with ARC. (Using ROCK)
95% of mine happen while I am away from home.
I have been using Android Auto while away, and there is a thread about that and Carplay crashing Roon and 6 times in 2 days was too much.
I have usually 0 problems at home or even traveling locally. But leave your region at your peril.
I had downloaded around 100GB of music and I needed to delete this to give me the ability to download using PlexAmp (which has been working great).
I am going to have a ARC timeout and then start again when all the issues are sorted 
I’ve had ARC blowout needing a complete reload and re-download a number of times. I never put it online unless I’m on 5G or strong WiFi anymore as five times bitten…
I had that with the app, though not for months. It did get better (too slowly). But never a core crash like some people
I don’t have a car, so can’t comment. But no Core issues when away from home in Berlin. Traveled once from Germany to Austria at Christmas when ARC was generally much worse than now, and it worked for a whole week (faint praise 
). But have been working too much since, so no other travels and hence limited test cases
You using an iPad it’s phones that are affected by this not the iPads as far as I am aware.
Lucky you 
.(maybe Austria wasn’t far enough away )
It seems to work until it doesn’t and then it cannot normally be recovered without a core restart. Everything else besides ARC work’s on the same network and this seems to be a common complaint. My PlexAmp is behind the same router and that is streaming music from home as I type this on a beach in Spain.
I’m truly hopeful that they sort out it out as I would love to have it working again. I have pretty much only used ARC since the first beta version as I love to have my music listening history in one place.
I realise we have gone off topic here so apologies to @Simon_Arnold3 for highjacking your thread
I also get similar issues on iPhone that I got on Android when app is in background its swapped out, disconnected from the server, when brought back doesn’t connect properly sometimes although it looks like it does you don’t get the connection screen but it doesn’t do anything to the zone it’s connected to, or often I get totally black screen only a restart fixes these issues. Had this on previous iPhone to and all the same issues I got on Android. You have no choice of ram on an iPhone it’s a fixed thing, and it manages it accordingly but with Roon not being a native app, having no background refresh option it gets killed often they need to work better and not be such a resource hog or it’s not fit for purpose on these devices. All this aside these sort of issues I only get with Roon and no other app at all so for me Roons app is the issue nothing else.
Fine all needs discussing Roon on mobile as main app or ARC just are not premium experiences. I have had all the same issues with ARC. Gave up on downloads nearly a year ago just a very poor implementation.
In the older thread people mentioned iPad IIRC. Anyway, I’m just saying that’s all I can try it with right now because I’m still waiting on the phone, and I may have different results once I have it
Yeah it’s clear that some people have serious core issues. I was just saying that my experiences are a poor yard stick because I don’t seem to get the stability or crash issues others get, in general. No idea why, probably just lucky not to have the triggers (whatever they are) my DB, usage pattern, or whatever
I had lots of those for far too long, many reinstalls necessary and hence losing downloads, etc., but haven’t had that in months now. It did get better in this regard
Thanks @Simon_Arnold3 I was warey of adding to the thread though I am aware you have had the same issues with ARC.
I was similar until recent ARC issues often made it unusable for me while away. Before this I was able to use it in the office all day every day over WiFi or 4G data. The experience was pretty good for a while and got steadily better. When not in the office it was OK unless I wandered into a poor data area and that would often kick it off (I had 8 to 10 hours a week driving).
In terms of Roon I have no issues and at all, so in that case I am more like you and wondering why everyone else does have issues.
When I get home I might well be upgrading to GB down (120Mb up) fiber though how 400/40 isn’t already enough I do not know. Like others I feel that something has changed which mean it is incapable of recovering from issues. This needs to be fixed and hopefully will be at some point
Mine is 300/30 FWIW
I only have issues with mobile remotes everything else works as it should, even my windows remote and Mac remotes are a flawless experience.
1000/50, my issues are carrier related as reception is spotty and this seems to send it into a fit it won’t recover from. Also had problems with transitioning from a Wi-Fi environment at work to cellular on the way home. The core for some reason refuses to offer any network connection, but it’s active. I get home it’s showing on my network but arc and Roon app won’t connect. Nothing in the logs to say it’s lost any network that I can see. Restart is required to get it back up. Any way that’s enough ARC that at least doesn’t suffer from the same scrolling jitter.
Spotty is the normal cell situation in Germany, especially on trains in Eastern Germany, and it hasn’t been a killer for me. Never a problem with wifi to cell switches either, and I do that all the time, like putting on the headphones at home on wifi and then going out. Maybe different cell networks/providers behave subtly differently and ARC doesn’t behave well with some. 
Blind guesses