Whenever I I upload a large video, after it has finished, I am faced with an issue where the page turns white and does not go back to the uploading page where it states the video has been uploaded. This only seems to occur with large files I upload between 70mb and 100mb. The video does upload, however, I cannot access my website for up to two-minutes after each large upload. It's like the website has crashed and is taking a few minutes for it to recover.

Bug, or just a simple setting I need to change?