Possible injector issue ?

[Cazza21]

Hi, please can I have some advice. I have a d2 2015 auto diesel...mostly runs lovely however I notice that first thing in the morning it is a little 'lumpy' and not smooth ride. This lasts until it warms up more (about 10-15 mins) It is also stuttery when in queueing traffic - i do disable the stop start but it makes no difference and feels a little hesitant. However once I get through the traffic hold up it runs okay. Do you think that using an injector cleaner would help, actually is this an injector type issue? I have no fault codes come up, timing belt and water pump has been done as well as oil change and dpf has been cleaned. I really love my car and this is the only issue I have with it, if I can just get passed this. I also only use shell v power diesel in my car as I feel this is the best fuel to use. Any thoughts would be appreciated to give me somewhere to start. It changes gears lovely so dont think its the gearbox.