Did you know, with Filament you can enable SPA mode for your panel.

You need to add ->spa() in your PanelProvider.

<?php

class AdminPanelProvider extends PanelProvider
{
    public function panel(Panel $panel): Panel
    {
        return $panel
            ->default()
            ->id('admin')
            ->spa()
            // ...
    }
}

In SPA mode, you visit the any page, Filament will cache the assets. So next time when you visit the page asset will load from the cache.

and there you go!..