I'm using the latest update for my new Laravel project.
For me, there is a latency to pages getting loaded both locally and in the cloud environments.
I also have a project in version 7 it doesn't have this issue.
I'm sorry to hear that you're experiencing latency issues with the latest update of your Metronic Laravel project.
You can try to minify the assets using "npm run prod". This would reduce the asset files size. It could be one way to fix the issue.