So no one had this problem? No idea how to fix it?

@shberge 

Yep, that seems to have solved this issue few minutes after I have enabled Periodic Speed Tests. Thanks.

@shberge That doesn't work for me, I'm using an SFP+ connection to the internet, maybe that has got something to do with it?

@shberge 

I know this thread is aging a bit, but this is still an issue for me.  Exactly the same as OP, and I've tried every solution on this page as well as any other that comes up while searching.

Software controller v 5.00.15 or 5.00.29 both do the same for me.  ER605 with latest firmware.

Thanks for insight,

@gravleycj 

If you use V5x, it is as buggy as it can get. but the problem you have I have not had. periodic speed test actually works for me on both ER605 and ER7206

But I wonder if this was not an issue on v5.015 but I do not think it is on v5.0.29

There will probably be a v5.0.30 that cleans up all bugs on v5.0.29 soon so then we can only hope that Tp-link can come with a bug free update this time.

@gravleycj 

Do you have need speeed test if you hold mouse over gateway?

@shberge 

Yes, I have need speed test when I hover.  That never resolves, it just spins circles.

I've enabled speed test, disabled, re-nabled, back and forth a few times.

Thanks

Edit:  Just saw the 5.0.30 update.  Nothing changed :(

  @gravleycj 

strange, I have not had problems with this with 5.0.30 and newer, maybe you should contact tp-link support if you still have problems.