The animdist tag has been the bane of my existence for a while now, but this really takes the cake...
I've had an issue with one particular asset - nswgr_46class' TS12 D50, <kuid2:73150:100304:1>. This uses ad602000's D53 main bogie, <kuid2:63971:54508:1>, which is moving mind-numbingly fast...