当我的ajax请求大小超过10 MB时，ERR_INSUFFICIENT_RESOURCES

I have an HTML5 app that may request large files from a backend server running apache and php, and I just noticed that any ajax request larger than 10 MB will cause a ERR_INSUFFICIENT_RESOURCES error. I've seen many posts here about too many ajax requests but in my case it's just the one request causing this after hitting 10 MB content size. Here's a screenshot of the requests:

You can see the last request for a file error out after 10 MB content size. The requested file is about 24 MB in size. From what I've read this is a Chrome issue and wouldn't be related to the backend I think, but this was working for me before and I've double checked apache and php settings just to be sure and they seem fine. What could be the cause of this?