Extremely Slow Performance

### Steps to reproduce

1. Just launch the app.

### Outcome

#### What happened instead?
1. The app is causing very high CPU usage and increasing the system load and causing the fan fan to spin loudly.
2. Every action in the app like moving between rooms, opening settings etc is very slow and takes few seconds to complete.
3. Disabling hardware acceleration enhances just a bit but still poor performance.
4. After couple of minutes of IDLE, CPU drops however when moving between rooms, it raises the CPU again.
5. Other electron apps works just fine on the same machine.
6. I to the same result when installing Element from APT or snap.

### Operating system

Ubuntu 25.10

### Application version

1.12.3

### How did you install the app?

APT

### Homeserver

matrix.org

### Will you send logs?

Yes