Differentiate Settings Page fields when using the same field groups. Requires "menu_slug" prefixed with something common and identifiable, in this case the Post Type of the Archive as well as a common naming convention, in this example it uses "-archive-settings".

acf-set-field-name.php

<?php

add_filter( 'acf/load_field', 'mytheme_set_field_name' );

function mytheme_set_field_name( $field ){
	if( is_admin() ){

		$screen = get_current_screen();
		if( $screen->id == 'acf-field-group' )
			return $field;

		$admin_screen = '-archive-settings';

		if( strpos( $screen->id, $admin_screen ) === false )
			return $field;

		$page = isset( $_GET['page'] ) ? sanitize_text_field( $_GET['page'] ) : '';
		$post_type = str_replace( $admin_screen, '', $page );
	} else {
		$post_type = get_post_type();
	}

	$field['name'] = '_' . $post_type . $field['name'];
	$field['_name'] = $field['name'];

	return $field;
}