Cache Uniform Expressions, fps hit in 5.1


Hello, after upgrading a project from 5.0.3 to 5.1.1 I had noticed a drop in fps even though all project/engine settings had been matched. When I ran ‘stat scenerendering’ I noticed that a line called Cache Uniform Expressions is coming in at 400-600 call counts and around 2.5ms. That same line in 5.0.3 was ~20 call counts and ~.05ms. The documentation that I’ve been able to pull up on that is sparse.

Has anyone else had issues with this or found a resolution? That seems to be the culprit for the fps hit, unless 5.1 handles certain functions differently and I’m misinterpreting.