Quote from MR.NBBO:
Yes, bigtime.
Something has changed in the last 3+- days.
Orders recognition/submission had almost reached instantaneous rates lately (nice job IB). But this week has been very bad, 10-20 seconds at the open, and 2-4 seconds intraday.
Couple that with stuck island quotes, a down ARCA line, log-in-outs........ughhhh (I lose my API page & basket partials when forced logout/in happens guys!!!). Things have really been hanging "blue", especially listed stuff.
General quotes have been a bit "sticky" lately as well.....prints go off, creating new/high low.....and it's not reflected in the TWS high/low.....even though you just saw? it go across on TWS. These only stick by 1-3 seconds typically, not that big of a deal compared to the execution issues this week.