I get this message from the site

 Low Worker Difficulty
One or more workers on this rig has been assigned a share/worker difficulty by your pool that is too low. Hashrate performance issues may occur.
The OPTIMAL Difficulty range for this rig is 76,904 - 461k
Please either adjust your worker settings at your pool, or change pools if you are unable to do this at your current pool. Thanks!

It only says 1024 difficulty next to the worker.


UPDATE

As it turns out it still seems to be mining well. I rented a few servers from that site and most of them are going at full speed