adjust your toe settings, and reduce spring rate & ARB / Dampers, Increase IT LSD & braking sensitivity. , I did that 5 months ago, and I only play F1 on/offline ever since.
Default car settings, especially with max downforce, is absolutely disgusting.
Oh, another tip, to all of you who constantly Max Front Downforce too, well enjoy your pivoting cars! lol.
(^ there are settings below the max values, they serve a purpose ! )
I can lap Tokyo with relaxed hands using the G25 in 1:10:70