a severe I/O performance issue on an old iPad Pro

**Describe the issue**
My Debian 12 VM on iPad Pro (A12Z) suffers from a severe I/O performance issue. systemd-analyze blame shows the disk device initialization takes over 30s. However, a dd sequential write test shows a healthy speed of ~113 MB/s. This suggests a specific performance bottleneck with random I/O and metadata-heavy operations (like installing software or booting), not sequential throughput. The problem persists with both VirtIO and NVMe interfaces.

**Configuration (required)**
* UTM Version: 4.6.5
* OS Version: iPadOS 26
* Device Model: A2228
* Is it jailbroken (name jailbreak used)? No
* How did you install UTM? via AppStore(UTM SE)

**Crash log**
Didn't crash

**Debug log**



**Upload VM**
I didn't use image modified by UTM, I used `debian-12.11.0-arm64-netinst.iso` which was downloaded on debian.org