Is there anything that you can do to eliminate sync errors on playbacks? I use the -allowincompatiblereplays but often get sync errors and then the replay usually doesn't work correctly.
I dont think so... if the replay doesnt work anymore that means the script is irreversible broken. A replay works like this basically: The AI replays the match with the exact same script and RNG rolls from the original match.
If a patch has introduced something more than mini changes, then there is nothing you can do to repair the script and the AI will do bullshit that did not happen in the real match.