When booting up minecraft then press play will be a slow loading time around 8 seconds

Steps to reproduce this issue

1. Open minecraft, then select play

2. Observe

Actual result

When press play to play will display all your made world will see there will be a slow loading time around 8 seconds

Expected result

When press play will display all your made world but will see will be loaded around 1 second or 2 seconds.