Absolutely, the regular first person on tanks being entirely unusable really hinders their ability up close and in hectic situations. While Assault's AT burst-damage is also probably a tad too high at close range (while tanks also do rather low damage to other tanks), I feel that the sensitivity/delay issue is definitely the worst thing tanks have to deal with right now.
Please give me more detail - what exactly is the issue you describe? I think I have an inkling of a clue, but let's make sure we talk about the exact same thing.