Hello mjtroy,
It sounds like it may be related to your connection speed. As mentioned in About lossless audio in Apple Music - Apple Support, "Streaming lossless audio over a cellular or Wi-Fi network consumes significantly more data."
In that case, checking and making adjustments to your cellular data settings may help. Check out the following guidance from View or change cellular data settings on iPhone - Apple Support.
"Choose cellular data options for data usage, performance, battery life, and more
To turn Cellular Data on or off, go to Settings > Cellular.
To set options when Cellular Data is on, go to Settings > Cellular > Cellular Data Options, then do any of the following:
- Reduce cellular usage: Turn on Low Data Mode, or tap Data Mode, then choose Low Data Mode. This mode pauses automatic updates and background tasks when iPhone isn’t connected to Wi-Fi.
- Turn Data Roaming on or off: Data Roaming permits internet access over a cellular data network when you’re in a region not covered by your carrier’s network. When you’re traveling, you can turn off Data Roaming to avoid roaming charges.
Depending on your iPhone model, carrier, and region, the following options may be available:
- Turn Voice Roaming on or off: (CDMA) Turn Voice Roaming off to avoid charges from using other carrier’s networks. When your carrier’s network isn’t available, iPhone won’t have cellular (data or voice) service.
- Enable or disable 4G/LTE: Using 4G or LTE loads internet data faster in some cases but may decrease battery performance. There may be options for turning off 4G/LTE or for selecting Voice & Data (VoLTE) or Data Only.
On iPhone 12 models and later with a 5G data plan, you can do the following:
- Enable Smart Data mode to optimize battery life: Tap Voice & Data, then choose 5G Auto. In this mode, your iPhone automatically switches to LTE when 5G speeds don’t provide noticeably better performance.
- Use higher-quality video and FaceTime HD on 5G networks: Tap Data Mode, then choose Allow More Data on 5G."
Kind regards.