I have a relatively new asus-computer (i7-6700 HQ-CPU, 2,6 Ghz, 8 GB RAM, 64 Bit) + W 10 Home. Suddenly it works really slow, searching files, f.e on both of my external harddrives (each 1,8 TB / each 1,4 TB free). It finds results but sometimes it searches "forever"...?!? Wyh is that so and...