Hi, no, there are no specific known issues. The two most recent ones which come to mind are: https://community.livekit.io/t/upgrading-python-livekit-agents-to-1-5-6-causing-memory-issues/976/17 which was not-reproducible and resolved by moving platforms, and https://community.livekit.io/t/memory-leak-in-google-stt-when-no-audio-input-exists/1023 which was resolved by a merged GH PR. Note these were with 1.5.6, and don’t cover the versions you are reporting.
Some growth would be expected for long-running conversations, but not 480MB, that would not be expected.
If there is a minimal repro you could share, that would be great. Also, how are you hosting your agents?