Been a while since I've been that route, but don't recall any more than the usual interstate bumps. TX takes care of their highways better than most any other state.
I-10 from TX border thru LA is another story altogether.
Suggest you consider some state roads thru TX unless time is against you--Hwy 62 out of El Paso thru the Guadalupe Mtns is pretty nice and if you like dry-camping, you can overnight at Guadalupe Mtn State Park parking lot. Hwy from there toward DFW is not a straight line, is mostly 2-lane, but in very good condition.
Taking I-20 when you hit it will be a much better route than I-10 I would think.
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