Since I switched to macOS 10.13 I have some problems with Alfred.
Indeed, I had to lower the window blur to reduce the lag. This problem is now solved.
On the other hand, I have another "esthetic" concern:
When I call Alfred, the window opens normally: the theme is displayed correctly (1st photo) But if I use the actions panel for a selected file, there is a kind of white frame which appears behind the window (2nd picture) And so, this frame reappears as I use Alfred (3rd pictu