I've recently researched DRS. During races, when i click on the DRS button, it has no effect.
Is DRS activated automatically by the drivers or is there anything actually wrong?
DRS is automatically activated by the drivers, KERS is the only boost that you have to activate manually, and even KERS can be set to be used automatically.
Thomas is correct! At the moment, DRS never got a chance to be developed for manual control. DRS deploys automatically. Maybe in the new format a manual control will be available as well!