Fix performance issue in Jupiter X with WPML and Polylang. Replace code of \CustomizerMultilingual::get_custom_customizer_option

class-multilingual.php

<?php
protected function get_custom_customizer_option() {
		static $theme_slug = null;

		$current_language = self::get_language();
		if ( ! $theme_slug ) {
			$theme_slug       = get_option( 'template' );
		}
		$option_prefix    = str_replace( '-', '_', $theme_slug );
		$option_name      = $option_prefix . self::get_option_key() . $current_language;

		$value = wp_cache_get( $option_name, 'CustomizerMultilingual', false, $found );
		if ( $found ) {
			return $value;
		}

		$value = get_option( $option_name, false );
		wp_cache_set( $option_name, $value, 'CustomizerMultilingual' );

		return $value;
	}

Perfect, thank you very much!