Image upload fails

[patrick]

In a photogallery I would like to upload more than 2-3 images at once. Let's say 20-30 images (around 200 KB per image) would be great.

If I try to upload this amount of images, it sometimes works, but many times the upload gets stuck (progessbar stops & loading icons keep running).

Is this a ProcessWire related problem or has this to do with any server connection interruption at my webhost?

My current php ini settings are:

memory_limit = 512M
post_max_size = 256M
upload_max_filesize = 16M
max_execution_time = 300
max_file_uploads = 100
max_input_time = 0

Thanks
Patrick