I did not tested this feature extensively to understand how indi telescope simulator is handling the pulse guide duration, but it feels like there is an inconsistency between RA travel and DEC travel for a similar guiding pulse sent by phd2.
The original problem was stated there: indilib.org/forum/general/4988-phd2-tele...expected-amount.html
Can someone confirm that this is indeed a bug of the telescope simulator ?
In indi/libindi/drivers/telescope_simulator.cpp at line 515, the guiding time delta is altered by the declination:
ra_guide_dt /= (cos(currentDEC * 0.0174532925))
Might this be what you are observing?