Is there a general problem QB Online is extremly slow , cant get into suppliers, and if i get there after 10 min , still slow ?

I'd like to lay down some solutions to help you fix the slow-loading issues in QuickBooks Online (QBO), Anel and Jerome.

Intuit expects the most frequently visited pages in QuickBooks Online to load in 10 seconds or less, and we constantly monitor our systems to ensure we are meeting this goal. QBO is a web-based service and it relies on the processing power of your computer or device, the amount of available memory (RAM), and the bandwidth of your Internet connection to function properly. A shortfall in any area can have a negative impact on performance.

We can check that your system meets the following minimum requirements to help narrow down the cause of slow performance: System requirements for QuickBooks Online. To give you more tips on what the browsers work best with QBO and on how to fix performance issues, refer to this article: Why is my QuickBooks Online slow?

If the same thing happens, then a cache-related issue might be causing them to load slower. While the cache helps webpages load faster, a simple corruption or issue can cause problems while working in QuickBooks. One way to rule this out is to use an incognito or private browser. Here's how: 

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Option + P

Once done, log in to your account as you normally would. If the web pages load properly, you'll want to go back to the regular browser and clear the cache. This helps remove the corrupted webpage or cache data that's causing the contents to load slowly. Alternatively, you can use another supported browser to work on QuickBooks. 

I'd like to know how you get on after trying the steps, as I want to ensure this is resolved for you. Please reply to this post and I'll get back to you. Take care always.