We have no clue about the kind of machine you have, nor the OS you're running. No one can give you any useful advice.
Other than this -- your tryout is about to end. It's only good for seven (7) days. You can't learn that much about all those applications in such a short time. Thank Adobe for that.
I actually gave info on what device im using above...
anyways here you go ...
Lenovo y520 laptop ( 2-3 month old)
Intel HD graphics 630
nvidia GeForce GTX 1050 Ti
Intel Core i7-7700HQ CPU at 2.8GHz (8 CPUs?)
Operating System: Windows 10 Home, 64-bit
DirectX version: 12.0
GPU processor: GeForce GTX 1050 Ti
Driver version: 384.94
Direct3D API version: 12
Direct3D feature level: 12_1
CUDA Cores: 768
Core clock: 1493 MHz
Memory data rate: 7008 MHz
Memory interface: 128-bit
Memory bandwidth: 112.13 GB/s
Total available graphics memory: 12225 MB
Dedicated video memory: 4096 MB GDDR5
System video memory: 0 MB
Shared system memory: 8129 MB
anything else ... let me know
also I used to use aftereffects cs6 on my old laptop but it did not face such problems ... (but it was a very basic laptop with one or no graphics card)
This problem tends to come up with NVIDIA cards, specifically GeForce cards. More specifically, it seems to happen with computers with GeForce cards and GeForce Experience software installed. It's a troubleshooting thing that the GeForce software injects into games (and other things that use GPU-acceleration like AE). You can try uninstalling the GeForce experience software. Alternatively, you could try going into AE's preferences and turning off the "Hardware accelerate...panels" option.
Sorry for this issue. Did you ever find a solution? Please let us know if you have or if you still need help.