Altserver dramatically slows down whole system with 300+MB install

[liammkellly]

I have an IPA that weighs 395 MB.
When I try to install it, AltServer slows the whole system down to the point that it is unusable.

The system is so slow that I can't even send a command to shut it down (it's a headless raspberry pi). It is definitely still active as it responds to ping and the anisette server still serves http requests (although response can take up to a few minutes to come).

Looking at the server output, it looks like this happens when downloading the IPA from the iDevice. It starts slowing down at ~290 MB and halts almost completely at ~300 (pretty consistent across several reproductions).

I have tried a wired install thinking there wouldn't be a network download but the behavior was the same.

I haven't been really able to gather debug data as my only option to regain control is to either manage to send a shutdown command remotely or straight unplug the device, but I took a screen recording you can see here (you can see the server starting to slow down at 3:03 and stopping completely at 8:36): https://tentiles.work.gd/RPReplay_Final1700419961.mov, and if you tell me how I can try to gather some more data.

Hardware: raspberry pi zero 2w
lsb_release:
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye