Ya, I was using snapper but didn't restrict the number of snapshots so I probably had more than 20 I use zfs now and have many, many, more than 20 snapshots wi

Ya, I was using snapper but didn't restrict the number of snapshots so I probably had more than 20 I use zfs now and have many, many, more than 20 snapshots without issue. I wasn't using a nvme drive with btrfs, it was a sata ssd. So perhaps the higher io ops or lower latency also helps.