MacOS app is much slower than the webapp on the same device

### Steps to reproduce

1. Where are you starting? What can you see?

The MacOS app is clearly slower at decoding messages than the webapp

### Outcome

#### What did you expect?

The same speed or even faster speed on the app than on the webapp

#### What happened instead?

All the contrary ^^

### Operating system

macOS

### Application version

Element version: 1.9.7 Olm version: 3.2.8

### How did you install the app?

from the official website

### Homeserver

_No response_

### Will you send logs?

No