Neos Flow Aspect to fill match cache when resolve cache is filled to speed up matching with many childern.

RouteCachingAspect.php

<?php
namespace Vendor\Package\Routing\Aspects;

use Neos\Flow\Annotations as Flow;
use Neos\Flow\Aop\JoinPointInterface;
use Neos\Flow\Core\Bootstrap;
use Neos\Flow\Http\HttpRequestHandlerInterface;
use Neos\Flow\Mvc\Routing\RouterCachingService;
use Neos\Neos\Controller\Frontend\NodeController;
use Neos\ContentRepository\Domain\Model\NodeInterface;

/**
 * @Flow\Scope("singleton")
 * @Flow\Aspect
 */
class RouteCachingAspect
{
    /**
     * @Flow\Inject
     * @var RouterCachingService
     */
    protected $routerCachingService;

    /**
     * @Flow\Inject
     * @var Bootstrap
     */
    protected $bootstrap;

    /**
     * @param JoinPointInterface $joinPoint
     * @Flow\Before("method(Neos\Flow\Mvc\Routing\RouterCachingService->storeResolvedUriPath())")
     */
    public function storeReverseCacheEntry(JoinPointInterface $joinPoint)
    {
        $requestHandler = $this->bootstrap->getActiveRequestHandler();
        if (!$requestHandler instanceof HttpRequestHandlerInterface) {
            return;
        }
        $arguments = $joinPoint->getMethodArguments();

        if ($arguments['routeValues']['@package'] !== 'neos.neos' || $arguments['routeValues']['@controller'] !== 'frontend\node' || !array_key_exists('@format', $arguments['routeValues']) || $arguments['routeValues']['@format'] !== 'html') {
            return;
        }

        if (!isset($arguments['routeValues']['node']) || !($arguments['routeValues']['node'] instanceof NodeInterface)) {
            return;
        }

        $arguments['routeValues']['node'] = $arguments['routeValues']['node']->getContextPath();

        $requestHandler->getHttpRequest()->getBaseUri();
        $fakeRequest = clone $requestHandler->getHttpRequest();
        $fakeRequest->setMethod('GET');
        $uriPath = '/' . ltrim($arguments['uriPath'], '/');
        $fakeRequest->getUri()->setPath($uriPath);
        $this->routerCachingService->storeMatchResults($fakeRequest, $arguments['routeValues']);
    }
}

Note that this is tricky you cannot always do that but for basic neos urls it should be fine.

Might make a package out of it...