Altea 2.0 FSI: Specs & Info for 2005 Model

Hi everyone, I would appreciate it if someone could help me.
I have two problems with my Altea.
1. Problem: I always feel a jolt when engaging or disengaging the clutch, as if the engine is loose. I've read quite a bit about the clutch master cylinder; can anyone help me with that?
I found something in VCDS where digital values, like 0 and 1, are outputted. This happens when the clutch pedal is pressed. Was that all there is to it for testing?
The car has approximately 85,000 kilometers on the odometer, but it's lowered and has 18-inch rims. Could the issue be related to the clutch itself or the drive shafts having some play?

Problem: While exiting the highway, the car started to jerk while in motion, and only ran on 2 or 3 cylinders. The ESP light came on, and I could only drive at 20 km/h. After restarting the engine, everything was okay again.
Error memory:

3 error codes found:
16396 - Bank 1: Camshaft timing advance: Not achieved.
P0012 - 008 - Implausible signal - Intermittent.
17953 - Throttle control: Malfunction.
P1545 - 008 - Implausible signal - Intermittent.
17887 - Vacuum brake system: mechanical fault.
P1479 - 002 - Lower limit exceeded - Intermittent.


Please help!

Regards,
Martin.