Element app cannot connect to my server using 5G or modern wifi

### Steps to reproduce

Element timeouts/has large delay when logging in to my server and using any features. This affects Element android only, as Element X, Fluffychat or PC clients seem to be working fine. Other users of our server report Element working for them just fine.

While troubleshooting, the issue seems to be related to networking somewhat.

- Using mobile data (5g): Bug present.
- Using Free WiFi at work (WiFi 5, MikroTik AP, unsure if related): Bug is NOT present, Element works fine
- Using my WiFi at home (WiFi 6, TpLink Archer AX12, unsure if related): Bug present
- Friend using mobile data: Bug present.
- Friend using his WiFi at home (Ancient WiFi MikroTik router, unsure if related): Bug is NOT present, Element works fine

Steps to reproduce the behavior:
1. Download Element
2. Make sure you are using mobile data (5G in my case)
3. Try to log in
4. Observe delay, inability to connect or timeouts

### Outcome

#### What did you expect?

For Element to work and connect

#### What happened instead?

It delayed and failed.

### Your phone model

Samsung Galaxy S23 Ultra SM-S918B/DS

### Operating system version

Android 15 Running the official Samsung OneUI 7.0 with Knox 3.11

### Application version and app store

Element version 1.6.44 [40106442] (F-e1cbf9c0)

### Homeserver

unfederated tuwunel, local instance

### Will you send logs?

No

### Are you willing to provide a PR?

No