Hi,
I have an iPhone X with iOS 16.7.10 which is the OS latest version for that device. My dashboards got painstakingly slow when I used many custom: button-cards. First I had just 3 buttons and I couldn’t notice much difference comparing to PC+Windows+Firefox. But when I got 15 buttons the interface needed a minute or two to load and sometimes it didn’t load at all after a refresh. When I used nested button-cards it essentially stopped working (or loaded after a few minutes).
At the same time PC+Firefox worked perfectly. I tried to reset cache, reinstall app, install dev version of app, core, supervisor, etc. - without success. I checked Safari, Firefox and Chrome on the iPhone - same slow speed. I also checked on another iPhone with newer iOS (18) and there it worked as expected.
I found a post here where someone said that app slowed down after some upgrades and started working again after downgrading to 2024.8.3. I did that and the app started working properly!
So now I’m stuck with core 2024.8.3 and frontend 20240809.0 (supervisor 2025.02.0, OS 14.2), but I’ll be grateful for any help how can I return to latest versions. I found another post from the same author (@TgF2011NL) that 2024.9.1 was slow, but 2024.9.2 was working again, so I may also check 2024.9.2, but that still isn’t the latest one and the latest one doesn’t work 
P.