Dear all,
I have my own Win 10 64 bit release build of Slicer (4.7.0-2017-07-27) running and I notice some extreme lags when interacting with the 2D views. This is particularly noticeable when I load a multi-volume (but also already with the sample images).
Interactions are for example: navigation through slices or frames (multi-volume); changing brightness/contrast with mouse.
The problem also gets worse over time until an update of the viewer takes more than a second and makes working virtually impossible. I can easily trigger this slow down e.g. by resizing the application window a lot (constantly resizing by just grabbing a corner and dragging it around the desktop for a while).
CPU power and RAM shouldn’t be the problem, CPU is a i7Quad@2.3GHZ and RAM is 16GB. Overall RAM usage of the whole system never exceeded 8GB and CPU is chilling at <15% during any of my interactions with Slicer.
Another observation: The 3D Volume Rendering runs super smooth all the time, but that goes through the GPU. However, even with CPU raycasting the time to render the HQ volume is still faster than changing the brightness in the 2D view.
Does anyone have similar experiences or an idea what could be the problem?