NEW PB : I found a new anoying behavior with the option I just bought : Swiper Animated Slider. When selecting HIDEN from the control style field, the image sometime desapear from the screen (I use "Cube" effect). Only the description is displayed. To make the pictures back I have to select one of the 2 other choices (either Inside or Outside) + Save. Then I selected "hiden" (again) and I save, consequently the display of the pictures is back. It happens to me several times. 

Note: You may check my PC configuration - it is a 6 core, i7- 8th generation and it includes a graphic board

Tks & rgds, Marc