Unreal Editor 100% crashes when project's initiation is almost finished

Unfortunately, 4.11.0 introduced some rendering issues to my project:
(1) All UI elements have lost the regular quality, and that is very noticable.
(2) Something wrong happened with in-game font - some texts do not fit their fields and get cut at the bottom.

None of this happened in 4.10.4 or any previous version I used.
Not sure if it’s tied to the rendering plugins, but still the problem exist and I don’t know how to fix it yet.