No problem, just wish it was of more use.
For the record, I think everyone has the mouse-lag in SH5; for me it was particularly bad in the control-room, as the frame-rate dropped. 1.2 patch helped a bit in that regard.
Probably something in how the mouse-cursor is rendered; noticed a few times how the software pointer (how it looks in-game) chased the pointer as it is in windows, lagging behind. Noticed that while working on mod, with the game running windowed. Probably just another thing that could do with some optimization, or just a result of the way they pieced this engine together.