The execution times are very slow, you’d expect transactions in super liquid FTSE100/FTSE250 stocks to be instantaneous, but the T212 times are extremely slow.
There are multiple threads on this in the past but seems like there is no solution/improvement.
Can you please provide additional details? From what I see your trades today consist of two stocks that both have a few trades a minute and at times - even less. Consider checking that and please get back to us so we can solve this together 
A slowdown can be caused by many reasons and while we did have issues in the past, our average execution time is currently 6-8ms. Once a matching trade is found, that is.