Discord lagging/crashing in the background

The mobile version is unstable and poorly optimized. Voice connections and broadcasts cannot be used in the background unless users' voice is robotic, cuts or even crashes the application itself. It's even happened that the application dropped and my account kept signing in and out of the voice channel until I reconnected to the server. At first I thought it was my device (iPhone 6s) since it's very old, but several of my friends are facing the same problems besides others (don't listen / speak), the transmission doesn't appear to access, etc.). Ps: one of these users has a high-end 2019 Android phone and suffers from the same problem! After several unsuccessful tests (disabling the background of the other apps, formatting the phone and installing only discord, disabling all discord functions), I decided to perform the same test with similar programs (Skype, TS, etc) and guess what: everything worked perfectly even if I left 147 apps in the background. And the worst thing is that Discord is not poorly optimized, the worst thing is that with each update, the same problems get even worse and this brings giant frustration to the user. I like Discord too much, but without an optimization or a lite version of the application, it's hard to want to use it on mobile phone