🚀 go-pugleaf

Hello

I'm one of the few (?) people who still make levels for Duke Nukem 3D
Atomic.
I'm making a city with a lot of different buildings, including a hotel, a
police station, apartments, a cinema etc....but suddenly one day when I
tried to make a staircase Build stopped and didn't react on any keys.
When I had restarted Build the same thing happened again and again.
I've even tried to reinstall both Duke and Build but that didn't make it
better.
My level has become quite big now, 309 kb which is about twice as big as the
biggest of the standard Duke levels and I'm afraid that might be the reason?
Is my level too big for Build?
If so, is there another level-editor or another version of Build which
supports bigger levels?
I'm now using Build version 1.97.
(My level isn't that advanced, it has a lot of doors, an elevator, walls you
can blow up, sound-effects and things like that, but what makes it big is
probably all the details, like garbage laying around in the streets,
pictures on walls, bottles, chairs and graffiti.)

Please help me if you can