Please help with some questions (upgrades)

I have been reading in other threads about the settings for Autoblip and Autolift to zero, and also about buying an upgrade for the cars, but it is not clear to me what is better, "H-shift", "2 pedals" or whatever.

I did not know that those upgrades existed or which one to use, and now I understand why I was struggling to keep the car on the track under heavy braking with other mods (HGT) when other guys were doing fine

Can someone please tell me what I must upgrade/edit to have the better and more stable car performance in this mod?

P.D. I use paddles to shift and have 3 pedals.

Install the gated shifter upgrade (quicker upshifts) and you'll be fine.

Merci Guillaume