In-call volume always increases to max. Overrides Samsung Sound Assistant

[moiss]

S23+
Android 14

Every time I make a call my phone sets the volume to max.

Tasker won't work. Toggling accessibility settings doesn't work.

Samsung Sound Assistant will mercifully set the volume to my preference, but for some reason a few seconds later, the phone infuriatingly overrides this setting and sets it to max anyway.

Please help me. I'm so sick of this.