But 150 FPS with shaders are hard to believe - even good PCs running shaders with 60 - 90 FPS
Confirmed. My notebook has a 7th generation i7 and an high-end discrete nVidia video card and even on 1280x720 it doesn't go beyond 75 fps (it reaches 80 but immediately thermal throttling kicks-in even with an external cooling base). Also it seems that in fullHD it reaches nicely 60fps but it's very hot.
With no shaders I can exceed 120fps but then I go for a 60 fixed for thermal reasons.
Note, the results are comparable under windows and under linux, but on windows fps go up and down, I think there are windows processes that interfere, I do not know if there's some kind of “gaming mode” that has to be selected, I'm no windows expert.