On Sunday 25 January 2015 21:31:35 Ronald F. Guilmette wrote: > The second thing I noticed probably explains why the mouse seemed a tad > sluggish... Both cores on my dual core system were pegged at 94-95% > utilization. you probably have software rendering. Check your Xorg log to see what driver is loaded. make sure that ati and radeon video drivers are installed. All the best