Multiple Image Upload Limited?

– WordPress up to date?
yes
– NextGEN up to date?
yes
– What version of NextGEN Gallery did you upgrade from? (i.e. I had 1.9.13, then upgraded to 2.0.61)
New install

(please confirm the following, with your server host tech) :
– MySQL up to date (at least 5.0)?
yes
– PHP up to date (at least 5.2.4)?
yes
– The mod_rewrite Apache module activated?
yes
– PHP Safe Mode OFF?
yes

Additional information that will help us find a solution:
– Who are you hosted with?
OVH
– What theme are you running?
Tech Magazine
– Which plugins do you have installed and activated?
Many
– Does this error still occur if you switch your theme to a WordPress Twenty series theme and deactivate all plugins except NextGEN Gallery? (please be sure to clear your browser cache and reload your site after deactivating)
Can’t try that.

When I try to upload multiple single images (no zip), only a few will upload. I will added say 20 and click upload. Only 2 will upload. No errors. While it’s uploading, it will suddenly reload and bring me back to the upload images tag with a blank upload area.

Total upload size is 7.4MB. My upload limits are 100MB.

https://wordpress.org/plugins/nextgen-gallery/