Performance degradation when implementing models in Kotlin

[jeonghyeonee]

Problem Description:
After implementing the model in Kotlin, there has been a noticeable performance degradation in the app. Specifically, data loading speed has become significantly slower on certain screens.

Steps to Reproduce:

1. Launch the app.
2. Navigate to the specific screen.
3. Observe the slow response during data loading.

Expected Result:
The app should maintain the same performance while loading data, even with the model implemented in Kotlin.

Actual Result:
After implementing the model in Kotlin, the app's response has become very slow during data loading.