I started to notice a bit of lag when opening the Start menu due to the introduction of the "reveal" effect, this happens only in devices with igpu and low resources, I remember that had happened before when they introduced Acrylic in some apps but then they corrected it, I hope this time the same happens and they optimize these effects.
No, it´s doing from the first Skip Ahead Build, not doing before. I have installed Build 16299 on the same PC x64 (in other HDD) and there is everything ok...?