Logged In: YES

[this is not related to LCDSmartie itself]
Yes, you can change the priority of LCDSmartie by pressing
CTRL-SHIFT-ESC, then click Processes, then right-click
LCDSmartie, Set Priority -> Above Normal. That's only a
workaround, because LCDSmartie lags due to the game taking
close to 100% of your processor time. This will not get
better until you get a faster processor, so my advice is not
to be bothered by it.

Thanks for the report.