It’s very hard to overtake with little to no slip stream. Dirty air is too powerful and in high speed tracks like Silverstone it’s almost impossible to overtake.
Ideas
In races within a second of the pace of F1 Sim Racing drivers, I’ve seen various complaints about the slipstream to dirty air ratio as it absolutely kills racing. However this is not the only issue with slipstream. Currently, when behind another car, you get the same level of slipstream whether you’re a tenth back or 9 tenths back. This means that, even with significant tyre advantage, on most tracks all the car ahead of you needs to do is stay in the drs of the car ahead of them to keep position, because it’s so easy to save battery. If slipstream was made more powerful the closer you are to the car ahead, i believe this would massively help the enjoyment of racing (as well as tweaking the ratio of this to dirty air). clear Evidence of this: https://www.twitch.tv/jarnoopmeer/clip/AbrasiveBitterRaccoonLeeroyJenkins-EqLLJlkTCakQEjH5. In this clip it is clear that despite being less than 2 tenths behind, with the Ferrari ahead of him over half a second behind his teammate, Jarno has basically the same level of slipstream as the Ferrari which means that despite a huge tyre advantage he cannot overtake the Ferrari.