Ok so when I play on the map I'm working on as you can see the zombies get stuck at pathnodes or at the window itself, some will go the window and break it and come through but some won't, I've tried placing the path nodes as close as possible to each other but that won't help, other windows are fine and some aren't, appreciate any assistance on this.

your hallway seems to be really small, try making it wider.

Unfortunately same result here, as you can one of the zombies goes for the window and climbs over, it's as the first zombie reaches the window, the other ones stop:



And here:



Really annoying me now.

This is how I have my paths in Radiant, I have tried making them wider apart, and closer together, but nothing works.. -.-

make sure wall hops are the right way arrow facing into the map

Can confirm they are facing the right way, I have everything set up correctly.

This is how I have my paths in Radiant, I have tried making them wider apart, and closer together, but nothing works.. -.-

i still think they your hallway/custom barrier needs to be bigger  zombies derp there cause they cant go inside each other, for what i can see your wall is half the size of the traverse brush

i still think they your hallway/custom barrier needs to be bigger  zombies derp there cause they cant go inside each other, for what i can see your wall is half the size of the traverse brush

I believe you're correct, upon creating a test map with bigger spawns and zombie areas the zombie has no issues, no matter how many are coming out of a respective window.

I'll reconstruct the bottom area to see what happens. Thanks for the help.