I'll look for the nVidia settings for SH4 if you have an nVidia card Fifi. Front Runner several months ago discovered discrepancies in his game's time clock when he was doing 1x TC while he noodled about the house while playing the game. His sunset was earlier and earlier each day. But when he used certain levels of higher TC, the clock would "hold". Part of the problem is that the game is built to run at 30fps, and that's what "ties" the game's day / night cycle, base time, moon cycles, etc. all together. If your game is running over 30fps, then your clock gets out of whack. Above a certain level of TC (2048??), the "clock" seems to run slower. Plus, doing a Save in the middle of a weather cycle will re-set the time it has run that cycle back to zero, like the patrol time does...