Pridor and hard suspension its hard to believe as every one complain its rear shocks are too soft.
If bike is struggling to touch higher speeds than looks like clutch plates are worn out. Pridor does not vibrate seriously its smooth compare to all other Ahl bikes except CB which has latest SOHC engine. Because of weak clutch plates bikes may be vibrating but don't go to conclusion quick do try to find an good mechanic as here finding good mechanic is serious problem & difficult task. Bike poorly tuned can also poor consuming too much patrol & producing vibrations.