[Bug]: Slow loading times for static sites

### Describe the bug

When viewing constellation apps, e.g. https://sudoku.freecode.camp/, there are surprisingly large delays before the initial server response.

### To Reproduce

1. load https://fast-test.preview.freecode.camp/ with the network tab open
2. check the timing tab for the html (fast-test.preview.freecode.camp itself)
3. see a multi second delay

The delay seems to vary by region. I've polled a few people in Italy (~2-3s), Turkey (~33s), South Africa (~4s).

https://fast-test.preview.freecode.camp/ is a simple site where the index.html is just `

`

### Expected behavior

For reference, github pages have a delay of around 10ms for me. https://www.freecodecamp.org/ itself fluctuates between 100ms and 300ms.

I would have expected ~10ms but anything up to 300ms would not have been surprising.

### Screenshots

### Desktop OS

Ubuntu 24

### Desktop Browser

Chrome

### Desktop Browser Version

152.0.7977.82 (Official Build) (x86_64)

### Mobile Device

_No response_

### Mobile OS

_No response_

### Mobile Browser

_No response_

### Mobile Browser Version

_No response_

### Additional context

_No response_

Start by reproducing the delay at https://fast-test.preview.freecode.camp/ with the browser network timing tab, then compare results across regions and with the reference sites in the issue. Done means identifying the source of the multi-second initial response and verifying that the response time is consistently reduced toward the expected range.

Written by the indexing model from the issue text.