Actually the gearbox jerking CVT caused by a different team who set up the ECU of the engine and Punch CVT TCU, @ initial launch the 2 Control unit didn't work together as planned and causing such high pitch whining noise, and transmission jerking.
Newer batches already has the 2 teams (proton and punch) sat down and working together to develop the programming together.
1st batch Bold
a. No rev limiter, can go up to 210 Km/h without problem
b. Gearbox kong (CVT light on)
c. Jerking especially when put into reverse gear.
Newer batch
a. Rev limiter up to 190Km/h and its electronically controlled by the ECU.
b. improved cooling assy on the CVT ATF cooler.
c. Less jerking, however it does not eliminate 100% jerkyness (random).
The 100 % collaboration will be implement on the new Proton Global Small Car (Savvy Replacement) with 2 option.
1. Proton GLC with 1.0 Engine 4 cylnder NFE non turbo + CVT
2. Proton GLC with 1.3 Engine 4 Cylinder CFE Turbo + CVT.
I have not seen the 1.3 version, but I have sat inside the 1.0 N/A pre production Version. (Will have test drive session in May this year).