Inconsistent Ai

Why is Ai so inconsistent, every time I load up my project I have to spend more than 50% of my next session trying to get the ai to work again. However despite changing no settings and just removing and replacing the assets it starts working again.

The main issue is it doesn’t actually give me any information why (ai move to) isn’t working all I get is a fail, the same navmesh is present the same actors with the same location is present yet it simply refuses to work unless I replace all the assets in the map with new ones (and even that is sometimes a trial and error process).