core: Chromecast integration causing high CPU use on 0.124

The problem

On 0.112 I had issues with home assistant slowdown. I would barely be able to use the UI. According to glances, my home assistant sat at around 70% CPU. I did some research and saw that bonjour was likely the cause. I disabled default config and the speed improved significantly.

I updated to 0.113 today. I began to notice those same performance issues. I added back default config with no change. I downloaded py-spy and noticed pychromecast was at the very top of the list at about 1300%.

At this point, I disabled the chromecast integration and restarted and my home assistant has been sitting comfortably at 10% cpu usage. I tried to add back a few chromecast devices manually by ip and noticed the same speed issues.

I have HomeKit enabled as both a controller and server currently without issue.

Thank you.

Environment

arch	x86_64
chassis	desktop
dev	false
docker	true
docker_version	19.03.5-ce
hassio	true
host_os	Manjaro Linux
installation_type	Home Assistant Supervised
os_name	Linux
os_version	5.4.18-1-MANJARO
python_version	3.8.3
supervisor	229
timezone	America/New_York
version	0.113.0
virtualenv	false

• Home Assistant Core release with the issue:
• Last working Home Assistant Core release (if known):
• Operating environment (OS/Container/Supervised/Core):
• Integration causing this issue:
• Link to integration documentation on our website:

Google cast

https://www.home-assistant.io/integrations/cast/

Problem-relevant configuration.yaml

Configured in UI.

Traceback/Error logs

Additional information