Two days ago I started noticing that my stops were triggering about 3 seconds late consistently while trading ES. My stop price gets hit, and the stop triggers and I'm filled about 3 seconds later. I verify this with the Audit Trail and Time & Sales. I've always been stopped immediately on Globex using IB in the past. And since this problem started with IB, I've watched the same stop prices on Tradestation get filled immediately (within the same second that stop price is hit). I've been talking to customer support for the last 2 days, but haven't received any answers as to what is going on. Has anybody else experienced this? Thanks.