How to run UE4 with exact version of OpenGL?

Subj. Is there a way to run the Editor with the specific version of OpenGL on linux? I’m using Kubuntu 18.04 on GTX 550 Ti with drivers version 390.48 which supports OpenGL 4.6, but the Editor (without options) launches with OpenGL 4.3.

UE4 only supports max 4.3. If it would use some OpenGL extensions over 4.3 then it would do it without you noticing.