Probable bug with memory

[cgmodeler]

I've noticed that the lag while switching from other window to paintstorm has stopped however this behavior shows up again when lasso selecting an area, dragging it several times and then lasso copying and pasting.

To reproduce:

- With a big file 2k at least, lasso select an area at least 1/4 of the size of the canvas
- Drag it and drop it several times
- Lasso select that area and copy it to the clipboard
- The lag begins, for any canvas operation (Paint, lasso select, transform)
- However navigation (Pan, zoom, rotate) and moving layers without transforming them still behave at normal speed

To stop it from lagging:
- Lasso select a very tiny area
- Copy it to the clipboard
- Now the lag has stopped and you can paint again at normal speed


Anybody having this issue?
Regarding my specs, 8GB Ram, 2GB video card, i7.