I have however noticed the same high cpu bug ( GDIDE Events tab - with a project open uses 50% cpu [solved] ) is in the images bank tab. In your project manager, double click on images and see what happens to the cpu.
Also noticed that if you open images through the “Image converter”, the file dialog does not show thumbnail preview of the selected image.
I am guessing it’s the same bugs as the ones victor fixed, but at different places. Hope this helps! 