Can not change Upload limit despite increasing it

Hello Community,
I have a weird problem, everyone knows about the Uploadlimitproblem, when I was upsetting a new website I always increase it first, but this time it did not worked. I tried .htaccess, wp-config, php.ini, Plugin(s) and it is (normaly) not serversided (cause my webhoster has no upload limits). So when I upload an image and it is under 8mb it loads quite quickly but when it is over 8mb it stucks at 0-2% very long and loads until 8mb are uploaded (loading bar/percentage of 8mb from the file is reached), then I get an http-Error. And it does not load in the background or so. I does not know what to do now, please help me.
WP: 4.8 | PHP 7.0.6 | MySQL: 10.1.24 | Theme: Pixagraphy (1.2.0.2)

• This topic was modified 7 years, 8 months ago by KnechtRootrecht.
• This topic was modified 7 years, 8 months ago by KnechtRootrecht.