Thanks for your reply. I just updated the Core and the data base and installed the new version of ARC and played a jazz album on my home system and it synced with the phone but when I tried to download it – it initiated the download but nothing seems to be happening but will leave it overnight. Tried a couple of more times this morning and the album is not downloading; went back to look this afternoon after playing another album and it appears the jazz album dowloaded somehow
Since the last ARC update 6 days ago, ARC on my iPhone crashes constantly. All it takes for the app to freeze and crash is to load an album or go to settings, let alone play music! I’m on an iPhone Xs running iOS 17.5.1. Is this expected behaviour given the hardware age? Before the last update I had uninterrupted and fabulous service…… ( This occurs on both cell and wifi, and I have adjusted settings to only receive bandwidth optimised. )
Hi @Norman_Spector,
Thank you for your patience. The team is making steady but incremental progress in our efforts to raise the performance bar in ARC for users with large libraries.
In ARC diagnostics available to our servers, the event you described in your previous post manifested as a series of out-of-memory errors and exceptions. The iPhone’s operating system instructed ARC that insufficient memory was available to fulfill the download, and ARC logged the failure. You mentioned the download ultimately succeeded; this indicates that either a) memory conditions on the phone changed at some point, b) ARC’s memory consumption changed despite the download process continuing in the background, or c) some combination thereof.
There are two steps from here, one internal to our team, and one as a test on your end.
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Firstly, we’ll investigate why ARC didn’t present any error message when the download was failing during your initial attempts. We’ll additionally continue our work to identify failure points during downloads or initial sync with large databases.
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On your end, it’s worth investigating what other apps consume memory during the ARC download failures, and whether these same apps remain open/backgrounded when you find the same content eventually downloads successfully.
We’ll follow up with more information as available. Thank you!
Hi @connor: Thanks for getting back to me. I am not sure how to check which apps are consuming memory. Not sure if this helps but yesterday after installing the hotfix and the other release to resolve the problem I was having on my iMac but not on the MacBook I downloaded two albums successfully. In both cases, I played the album on my home system first and made sure it had synced with the phone as recently played. The first album downloaded very smoothly and quickly on the first try and without any difficulty. A few hours later, I tried another one and it too initiated the download right away but it stopped a couple of times so I re-booted the iphone two or three times and it succeeded.
Hi @connor: Just played an album on my MacBook and it synced immediately with my phone even before the full first track had been played. It was a classical album, and I noticed that Roon no longer shows all the compositions of that album in my library [in this case Mozart which would be quite a few!] I took care not to be using any apps on the phone or even on my MacBook that I also have on my phone. I then initiated a download [it did so right away and I got the circle] 10 minutes later I returned to the phone and it had downloaded perfectly. Issue resolved?
Hi @conor – Just downloaded another album using the same technique. After I initiated the download without a hitch, the app on the phone closed and when I re-opened it the album was downloading and finished smoothly and completely.
If I had to guess, I think you’ve addressed what I highlighted on June 25 and it solved my problem: “Is it possible that the issue is precipitated only when I play a classical album. When I do so, the sync does not first show that album as having been played, but shows the composition, which in my case could be 30-40 albums. [I really would prefer not to have this synced at all] When I play a pop or jazz album, on the other hand, it’s that album that gets synced.”
Hi @ajl,
Thank you for your post.
In diagnostics, the iPhone’s operating system reported to ARC that insufficient memory could be allocated to maintain the app. The crash we observed occurred shortly afterward and was reported to our servers.
Our team is investigating performance issues with ARC on older phones for users with libraries containing 150k+ tracks. We’ll report back with additional information as available from development. We’re going to merge your post into the tracking thread. Thank you!
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thanks @Connor !! - I guess this will spur on my intention to replace my old phone! I really enjoy ARC and Roon in general and appreciate all the effort that goes into keeping the products on the road and moving forward.
What’s happening?
· I'm having trouble with Roon ARC
What best describes your issue with ARC
· Other
Describe the issue
nconsistent-wi-fi-download-performance-on-iphone-15-pro-ref-plpr06/275389
Describe your network setup
I’m reopening case ref#PLPR06
cc @connor who was helping me with this case I thought had been resolved but it isn’t. I sent him two private messages under the old support request that is closed indicating that the phone is connected to the server but I keep getting the message when I choose an album that something went wrong and I should retry and so I am unable to initiate a downloadReopened and new post merged.
Thank you for this
1 Like
Hi @Norman_Spector,
Thank you @Carl for re-opening here. We’re investigating and will respond shortly with more information.
Hi @connor
It’s been terrific working with you and am pleased to re-establish contact. I thought my issue had been resolved and marked it as solved but it wasn’t. [I also filled out the satisfaction survey with 5 stars!] Then, the iPhone connected to the server and synced the latest album I had played but I kept getting the message when I tried to choose that album for downloading that something went wrong and I should retry. Over and over and over. I tried everything but was unable to even initiate a download. Then I wondered whether it was because I had deleted some offline albums the day before so I re-booted my nucleus and ARC began to work — though not perfectly — but I was able to download a couple of albums with some starts and stops. [Is it harder to download hi-res, take longer, crash the app etc?] In any case, will be pleased to continue to help with your research
Hey @Norman_Spector,
Thanks for taking the time to share your reports throughout your Arc journey so far, and thank you for your patience and willingness to work with us as we continue to push out more improvements to Arc.
From a recent Arc diagnostic, we’re seeing repeated errors in regards to a lack of memory on the device:
Error downloading track 50:9:243978290: Out of Memory
Error downloading track 50:9:243978034: Out of Memory
Are you syncing, and attempting to download a single album and crashing? Or, have you already downloaded a large amount of content and then eventually hits a crash loop?
I did also want to set proper expectations, that while our QA team conducts extensive testing on large libraries, we can’t guarantee full functionality for collections as large as 700k at all times. Again, we appreciate your understanding while we continue to tackle such obstacles. 
Hi Benjamin: I mostly dowload one album but sometimes two. Not sure when you did the diagnostic but working with @connor a lot of things have improved over the course of the months as you can see from the thread. Can you tell me when that download in the diagnostic occurred? It is now 135 PST on Monday August 5 and I will try to download an album in the next 30 minutes and perhaps you could do another diagnostic to see how it performs. UPDATE I have just tried for about 20 minutes. The hi-res albums I had played in the past couple of hours synced up pretty smoothly, but when I tried to select the most recent one [192] to download I kept getting the something went wrong / try again message. A couple of times I didn’t get the message and I then tried to select that album to initiate a download and the app quickly closed. I re-booted the iPhone and this did not change. I noticed that the phone heated up during this process. I am going to stop here rather than continuing to try to initiate a download and perhaps you could do a diagnostic to see what is happening in the process UPDATE 2 I returned same day at 2250 and was able to initiate the download successfully. The circle showed up but nothing happened for 10 minutes. I then checked and the app had frozen. I re-booted the phone and tried again and got the message some thing went wrong re-try. I did and got the message that there was no connectivity to the server and I should listen to offline content. I checked the download queue and there was a warning message that the download had paused as there was no connectivity. Came back to the phone just before midnight and selected the album and noted that the download had begun and the circle had started to fill. Returned to the phone 10 minutes later at 5 minutes past midnight and the download had succeeded. Five minutes later I tried to download a second album and the phone froze. You and @connor should now have considerable information in the logs about what’s been happening at my end and it’s over to you now. UPDATE 3. It’s now 0820 PST on August 7 and I have just spent about 40 minutes trying to sync up a DSD album to download and have not been able to get to the point where I can initiate the download. You may want to check the logs beginning at about 0740. Tried a few more times over the next few hours and nothing changed. Then re-booted my nucleus around 1020 hours and tried again around 1050 and was able to initate the download which took a couple of minutes to complete. Initiated another successful download at 1240 with a few hiccups. UPDATE 4 1235 hours PST August 8 – just downloaded album, a few hiccups but closing and re-opening app appeared to unstick things. FINAL UPDATE: It’s now 310 hours and just finished downloading another album which took about 30 minutes, with several times having to shut down and re-open the app which it did a couple of times on its own to get the circle moving again
What’s happening?
· I'm having trouble with Roon ARC
What best describes your issue with ARC
· Other
Describe the issue
Hi, I have been the problem since day 1 of roon arc, my phone connects to the server, from my local network I can listen to my music but as soon as I am connected through 5G/4G, the app crashes after a few minutes (and my phone runs very hot (iPhone 12pro)) … any idea ?
Describe your network setup
Unifi (gateway, switch and WiFi)
Hi @Leo,
Thank you for your post. According to our diagnostics, you have over 600,000 tracks in your Roon library, nearly all of them local.
ARC diagnostics indicate the phone is experiencing memory pressure during normal functioning. You’re unfortunately in a pool of Roon users with large libraries who are experiencing performance failure with Roon ARC even on newer major market phones.
The QA and ARC dev team are investigating this issue to remedy, or at least improve, the problem with an upcoming fix. Please stand by and we’ll merge your thread into the tracking thread before long so you can receive updates.
Hi @Norman_Spector,
We’ll certainly continue to investigate. Per my last reply:
All the symptoms you describe above can be symptoms of lack of memory. If we have any additional news to share during out findings, we’ll follow up here directly. 
Hi @ajl,
The team is still investigating this issue and it remains with QA. There are ongoing reports of large local libraries causing crashing in ARC, especially on iOS phones.
Hi @Norman_Spector,
We’re examining these reports in detail and passing them along to our QA team. I’m going to merge your reports into the main tracking thread so you can receive more granular updates on progress.
Long story short, we’re working to reproduce and pinpoint the failure mechanism, but as soon as we do, we can implement additional padding or workarounds to better improve handling. Thank you again for your patience.