Actually, the current tuning settings of Qin Miao's race car aren't the most suitable for this track, making it somewhat awkward for him to drive.
After all, that incident was quite a blow to everyone on the team, and nearly everyone's performance has been affected because of it.
The car gives Qin Miao the impression of overall insufficient downforce on this track. Some corners, which Zhou Guanyu mentioned could be taken at full throttle after adjusting the setup, require Qin Miao to find the precise limit of the track to go through at full throttle.
Although this tuning setup can give Qin Miao enough speed during the qualifying phase, any mistake, even a very small one, can cause the car's speed to drop significantly. Hence, this tuning is somewhat extreme for Silverstone and is not suitable for use during the main race phase.