At some point (seemingly random) the "free" amount of research stops being added in to my accumulation. It is being added along with whatever is being generated by the existing cities but then, although the tooltip still shows it being added, the only amount the cumulative number is increased by is JUST what the cities are contributing, causing quite a bit of loss of science for the early game. The toolbar at top also continues to show the remaining turns of research for that tech as though the entire amount is being added, so it remains on the same amount of remaining turns till completion for several turns sometimes. I attempted to add the lua.log both as a log and rar file. Hopefully you receive it.