How to optimize unity?

Question

Unity

Good evening. The fact is that my laptop is not very powerful (hp255 g6). Sometimes the unit has problems because of this. Poor responsiveness of the engine interface, etc. But for your information, there are initial games in the unit (3d fps/ 2d platformer/ racing), these are games that offer to develop according to the guide. But my system pulls them. Please help, if such problems will arise further (in the idea of ​​​​creating indie games and platformers).