I've had the same problem on my old laptop -- and that was 2.2 GHz and 2 GB RAM. That problem had started after installing BIAB 2011. (Supposedly the new version of RealTracks used more real time ressources.) When it broke down and I had to replace it, the problem was gone. (The new laptop is a little faster, 4 cores instead of 2, and has twice the RAM.)


Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build