Whenever I create a new solid and mess with the layer stretcher it stops working after some seconds. It doesn't respond when I try to resize the layer and whenever I scroll the preview up or down (zoom in or zoom out) the layer stretcher does not follow it.
And when I write an specific timestamp and press Enter the preview does not respond automatically. Sometimes when I drag the timeline marker left or right and leave it in a point in the timeline what is showing the preview does not correspond to it. That and the layer stretcher only respond when I press Caps Lock twice or when I zoom in or out.
The shape I am messing with is not that heavy and it's something that my GPU or RAM can handle very well. I don't know what the problem is and it's annoying me 😕
BTW, I am using the trial 15.0 version of After Effects (CC 2018).
Error or problem, Freeze or hang, Performance, Preview, User interface or workspaces
It doesn't matter whether your GPU can "handle things well", the driver could still be incompatible with AE and misconfigured. Same for your input device. Your captures of an ultrawide screen suggest that this is a gaming PC, but then AE is not a game and has different requirements. you need to spend some time sitting down and figuring things out. You may simply need an older app-optimized driver for your GPU, not the latest version for soem game and similarly you may need to tone down a hyper-sensitive gaming mouse or whatever to get proper click registration. That's just how it is.