I use TXS 2.8 + Win 8.1 (64).
I am editing a big tex source (main file + sub files), which contains a lot of cross-references (more then 100), so I use in TXS the option: "Automatically load included files". My problem is the next:
When I load the main file in the TXS, then the CPU usage jumps to 90-95%. If I delete the option "Automatically load included files", this bug there isn't.