I did some races last season on tubless.
X-ones for dry and Specialized Terra Pro’s for mud.
Hunt 4 season disc rims.
I ran the X-ones at low 20’s and kept burping the front on a particular corner each lap. After 4 laps I was shouldering and running to finish as I burped too much air out.. It was the sort of hard braking, downhill, all the weight on the front type of corner, with a nasty rut across the corner.
Annoyingly, I got covered in suspicious looking white, slimy fluid (sealant) from running with an unseated tyre. Ooo Err.
Other than that they were fine. My own fault for running them too low. They were fine mid-high 20’s.