Beware 'Found It' (and other fast traders)

I’d love to get specific examples. What do you mean when you write: “I noticed $200 slippage on a $800 profit when comparing my IBD to C2” - what is the specific signalID you are looking at?

Also, please explain what this means: “I also noticed the algo doesn’t get filled and was going to transfer the trigger to a 1min bar chart for the LR price predictor to have a better chance to fill.”

What didn’t “get filled”? Specific signalid please, so I can understand, and if there is a C2 issue, investigate.