Well after another round of tests I think that everything its quite ressolve, at the beggining I tought there was a problem with Corona 11 and Chaos Scatter, here are some reesults:
with Corona 10.3 and 11.1 it took - 1:30 min to startup 3ds max 2024
uninstalling them took - 35s (even with growFX)
with Corona 10.2 - 39s
But then again I tried with the Corona 11.1 and the startup its pretty fast - 37-39s , so my problem was something with the License Server that maibe something odd happened while uninstalling, so the only thing that I can recommend for those that have slow startup is to try unsinstall an reinstall License Server