GZDoom 4.1.0 crash in Confinement 256

[splash27]

GZDoom 4.1.0 crashes at the map CONF55: Inner Demons of Confinement 256 https://www.doomworld.com/idgames/level ... ds/conf256

Just about 20 seconds of gameplay is enough to cause a crash. Maybe it is a map problem, but I am still curious what's wrong and if it can be fixed. It's supposed that map worked with previous versions of GZDoom.

I attached a CrashReport.

[Rachael]

Does it still crash when you use the latest devbuild?

[splash27]

Yes, it works on the last dev build. I still experience a huge frame rate drop when looking at the south direction of the map, but I think this is the map problem.

[axredneck]

I still experience a huge frame rate drop when looking at the south direction of the map, but I think this is the map problem.

Try to restart GZDoom. Doesn't help? Try to restart it again. (I don't know why but it helps in my case.)

[Graf Zahl]

The map is broken, it has floor and ceiling reflections plus a stray mirror line which combined makes the renderer go haywire on portal recursions. This causes severe slow downs and even crashes, particularly on Vulkan.

[Graf Zahl]

Addressed via compatibility flag.