Page Unresponsive on first ionic serve - IonicV6 CapacitorV4

When I first serve the app then it went to Unresponsive state and then after waiting for like 10-20 seconds then page become responsive and restAPI’s and other component loads and when I reloads ionic serve didn’t stuck.

So basically I’m facing Page Unresponsive issue on first serve. Please suggest any solution because I’ve no clue why this is happening.

Ionic:

Ionic CLI : 6.20.3 (/usr/local/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 6.5.3
@angular-devkit/build-angular : 15.1.5
@angular-devkit/schematics : 15.1.5
@angular/cli : 15.1.5
@ionic/angular-toolkit : 6.1.0

Capacitor:

Capacitor CLI : 4.6.1
@capacitor/android : 4.6.1
@capacitor/core : 4.6.1
@capacitor/ios : not installed

Utility:

cordova-res : 0.15.4
native-run : 1.7.1

System:

NodeJS : v18.12.1 (/usr/local/bin/node)
npm : 8.19.2
OS : macOS Big Sur

Screen Shot 2023-02-15 at 12.54.13 PM