I still get double-scans once every 30-35 systems or so. Half scans not so much, maybe once every 50-60. I feel like it all depends on bandwidth, though. When I alt-tab away during FSD, the chances of having to double(or even triple) scan increases tenfold. If I am doing other strenuous activities such as streaming a video on my laptop, it seems to affect the quality of gameplay as well, though not as much as alt-tabbing.