Background of the issue:
I have problems, that the backend is very slow and when the site is one day not used and a new order is arrived, the opening of the order can take up to 3 minutes. I try to find the issue.
On my debugging journey, i found the weird behaviour, that i see no messages during the plugin update. Only when the update is finished i see all update messages at once. When I disable WPML completly, the update messages are appearing during the update.
I want to rule out everything that leads to faulty behaviour, which is why I want to have the problem solved. But I'm sorry to say that your plugin makes the backend extremely slow, even though we have the highest hosting package.