wordpress上传2G以上会提示上传的文件不完整

上传2G以上的文件就会提示上传的文件不完整，2G以内的就可以，

The uploaded file was only partially uploaded

php的upload_max_filesize和 post_max_size都改成5000m了，有没有人遇到过？一直没找到解决办法