Well, at least don't drop all 1-stars. You surely can properly rate Graphics or Music.
For the intended experience, try watching this stream: from the beginning, or from Classic Tower Run.
The game is supposed to run at 60FPS (fixed framerate). It's sad your machine can't handle the game performance-wise. The recommended technical requirements are: Windows-10 x64 bit, Intel Core i7 3.6GHz, 16Gb RAM, NVidia GeForce GTX 1060 6Gb videomemory.