WordPress Website Memory Issue Fix

We are seeking a skilled freelancer to address a memory issue on our WordPress website. The task involves identifying and resolving the memory leak that occurs when the site is loaded. The ideal candidate will have experience in WordPress development and troubleshooting. We are experiencing intermittent issues with our WordPress website. The site often fails on the first page load with fatal errors such as "Allowed memory size of xxxxxxx bytes exhausted", but after refreshing the page it usually loads correctly. The fatal error has appeared in different locations over time, including Elementor, Astra theme files, UpdraftPlus, and WordPress core files. We have already completed basic troubleshooting, including increasing the PHP memory limit to 1024M (verified via both WordPress Site Health and phpinfo()), reinstalling Elementor, clearing caches, regenerating Elementor CSS/data, removing unnecessary files, and reviewing common WordPress and PHP configuration settings. Despite these efforts, the issue persists. We are looking for an experienced WordPress developer or server administrator to investigate and identify the root cause. It may be a relatively small configuration or hosting-related issue that has been overlooked. We also require brief documentation outlining the root cause of the issue, the steps taken to resolve it, and any recommendations to prevent it from recurring.