out of memory during compilation?

Don’t know what’s going on, never got this before 4.22. I converted my project to 4.22, and was checking a simple material, one basecolor, one normal, one ao, that’s it. And was warned:

[2019.05.05-14.39.15:864][936]MaterialEditorStats: Error: [SM5] (): out of memory during compilation

Totally no clue…I restarted editor, still got this. Does anyone have the same issue?