Happened to me twice today. Once at Spa... ....and also at the A1 Ring. Occasionally, despite being well within 1 sec of the car in front, we get no DRS activations as the line is crossed. In the picture above I got no DRS. One lap later the positions were reversed and he too didn't get any DRS. Sorry I can't be more detailed than 'it sometimes doesn't work' but it's happening to others & some are wondering if the DRS rules have changed.
ok, I'm glad, it must be frustrating to be pressing and not getting the drs, which is the passion of dtm in other things to give more excitement