Well here's my regen history the best I have record of it, I'm sure I missed a few early on before I recognized there was a real problem. I have been having issues almost since I picked it up. They replaced a sensor, and they now have a ECU on order (backorder.) I even had a few regens and then within 5 minutes it goes into limp mode which a restart clears. There were also a couple regens ran at the dealership during troubleshooting and maintenance which I don't have listed below.
Regens time on hour meter, all regens complete successfully ~12 minutes:
4 (ran by dealer due to error code, day after I brought it home)
101
106
112
118
119
148
165
175
187
191
197
213
224
234
At one point, LS time told my dealer who told me they did NOT think the regen frequency was abnormal!
They have also blamed the fuel quality, which I get only from 2 sources with high turnover. I told them to sample it and prove the fuel is bad. After that, they ordered parts lol