I'm experiencing the same issue on X3d: full lag when moving around the mouse cursor, but playback continues fine.
- ATI Radeon 920 gfx.
- Intel Q9550 core 2 quad.
Observations while working in a new project (only 2 audio tracks, no midi tracks or soft synths, no plugins, aim assist off):
- Happens only when hoovering the mouse in the clip pane of the track view.
- One of the cpu cores spikes to 100% when moving around.
- More than 10 take lanes opened.
When closing the take lanes, the problem is gone!
- Lag is most heavy when 'smart' or 'edit' tool is selected. With 'select', 'move' or 'erase' tool the lag is obvious less, and with the 'draw' tool no lag at all. (thus differences between the various tools observed)