I have seen several times on the forum that there is an issue with Nvidia laptop graphic driver, but I did not see the answer.
If you have an obvious lack of FPS it might be that the game is not using the right GPU.

> Right clic on the Windows desktop and launch "Nvidia config panel"
> In the 3D-settings menu, go in Manage 3D-setting
> look for Program settings
> add the toxikk exe in 1. (c:\program files\steam\steamapps\common\toxikk\binaries\w32\toxikk.exe)
> select the NVIDIA processor in 2.