Fortuner 2011 - feel shocks or dribbling inside

Dear Sir,
1. While driving at 40 km above speeds, I feel dribbling / shocks / jerking inside and not at all smooth driving. I did tire balancing and alignment but did not help.

2. If I turn the steering wheel to right end and move the car, the steering wheel does not return automatically as it should be with any power steering. I have to manually straighten it.

Thanks in advance for your great advice.

Tomy Thomas