Selector Tool is too slow - Help Please!

[eneroth3]

Selection Tool process is slow, unbearably slow

Up until yesterday SketchUp Pro 2017 was working wonderfully, now it still works great with the exception of one thing: It is impossible to triple-click or double-click select because it takes about 30 seconds for the selection tool to work and highlight the object. It freezes until then. Absolutely every other function works perfectly, it just takes half a minute to select/deselect anything. A group, a face, a line, anything. It is driving me crazy… It is not model specific either, it happens …