My own experience with MakoCELO has unfortunately added input lag. I would say manually as well if their profile are public, check if their teammate[s) is on their friends list,usually you can sort by "game playing"
Input lag? Can you expand on this?
I have heard some people complain about the original CELO creating lag. But I am not familiar with the code enough to venture a guess. But MakoCELO should not be causing lag. If it IS CAUSING lag, then the problem must be with talking to the Relic servers. That would explain the complaints about original CELO as well. Since both version now talk to the Relic servers.
Did MakoCELO cause lag issues before the 64-bit patch? It did not talk to the Relic servers before the patch.

Sorry