Chaca Chaca Choo choo

[Volveezy70005]

Volvo with Cummins isx 622k miles started to regen more frequently 3 times in less than 2000 miles, typically loaded no heavier than 30 thousand pounds and the last regen lasted more than the usually 40 minutes but this time started spewing white blueish smoke from the stack followed with a foul mixed chemical smell. Than had the red triangle stop engine light as I was traveling on 81 south. So I did that, waited for it to cool down turned it back on and performed a parked regen.. Went on to deliver the load and ever since the truck sputters climbing the littlest grade so now I'm giving it boost and it seems to decipate a little but still continues to sputter. I have no check engine light and still sputters or feels like it wants to choke.. I did have the dpf filters baked cleaned a few months ago.. Soooo don't know what to do next... help guys and thanks in advance