A few seconds of delay are a big problem

Last night, some positions in ZuluTrade were closed in a negative trend. What a pity!
Unfortunately the system has executed the close command with a slight delay, changing the result

This is what would have been:

This is what happened in my account:

The system opened 3 positions instead of 4 for my mistake: I put a limit to three.

The phenomenon of slippage has caused a loss of 49 pips (-0.049%) instead of losing just 2.6 (-0.0026%)

This is because the signal provider uses FXDD as a broker, and I use AAAFX. The delay of communication between the two has caused this small loss.
However, delay does not always result in a loss: for example, sometimes has a positive trend and on average is not a big hassle.