This ^^^ is a common issue reported on numerous threads complaining of freezing when using the btrfs file system with quotas enabled.
I cannot say for certain if disabling btrfs quotas will help in your specific case. However, if you do not provide feedback when solutions are suggested how are we to know?
Disabling quotas does have a negative impact on timeshift, as it disables timeshift’s ability to gauge how much space is being used for snapshots. Given the choice between system freezes and reducing timeshift’s features, I’ll leave it to you to decide which might be more important.
Please provide feedback to all suggestions put to you, as this benefits all other Garuda users having similar issues.