version:6.1.3.0 Switching back from the background will be stuck for 5-6 seconds

How to use GitHub

• Please use the 👍 reaction to show that you are affected by the same issue.
• Please don't comment if you have no relevant information to add. It's just extra noise for everyone subscribed to this issue.
• Subscribe to receive notifications on status change and new comments.

Steps to reproduce

After opening the app, switching to the background, opening another app, and then switching back, it will take a few seconds to operate the app, and the iPad may also crash.

Expected behaviour

Tell us what should happen

Actual behaviour

Switching back should work without any lag. I don't know if it's because I have too much data or it's loading the cache.

Logs

If applicable, you can post the iOS app or server logs (removing any sensitive information).

Reasoning or why should it be changed/implemented?

Environment data

**iOS version: iOS 17.3.1

**Nextcloud iOS app version: 6.1.3.0

**Server operating system:centos8

**Web server: nginx

**Database:mysql

**PHP version:php8.2

**Nextcloud version:30.0.1