Shaders are reloading everytime I move a node or open a material, instance, or function.

Summary

When I open a material, a material function, or a material instance and begin moving nodes or clicking inside the editor, the engine lags heavily and suddenly starts compiling between 800–1,200 shaders, in an empty project with a normal-sized material that isn’t particularly complex.

This happens even if I’m only editing inside the Material Editor without applying any changes. Each time I try to add new nodes or adjust something, the engine immediately reloads shaders.

As a result, this constant recompilation not only slows down my workflow but also sometimes causes the engine to crash, resulting in lost progress.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Stability

Steps to Reproduce

Open a material, a material function, or a material instance and begin editing it.

Expected Result

It was never like this before. Shaders only loaded when you applied your changes manually, not while you were editing them.

Observed Result

Shaders are reloading while you edit the Material/inst/Function

Platform(s)

PC

FORT-962844 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.