Lenovo IdeaPad Y700 (and possibly (m)any other NVidia GPU laptops)

framerate fluctuations in any game - runs silky smooth for few minutes, then drops to borderline unplayable framerates for a few minutes.

Thousands of people across dozens, maybe hundreds of internet forums having this problem for years, since the thing was released.

I personally lost at least 20 hours trying to solve it, and had the laptop in gaming-unusable state because of it for the past half a year.

...yesterday I FOUND A SOLUTION!
1. Download NVidia Inspector by Orbmu2k
(some hobbyist hacker type)

2. use its "profile inspector" to flip an internal setting in nvidia driver.

3. flip "Enable application for Optimus" to SHIM_RENDERING_MODE_ENABLE to basically tell the "Optimus" crap to fuck off.
(not sure why the value is called this, because it's clearly disabling the thing)

4. the thing works flawlessly silky smooth again.

...thousands of people across dozens, maybe hundreds of forums...
...i could be their Lord and Savior...
...if only I weren't too lazy to hike across all of them and register just to post the solution.
(tech forums really should have some "I HAVE A SOLUTION but if i have to register I won't bother")

also...
WHY
DO
WE
KEEP
LETTING
HW
MANUFACTURERS
WRITE
SOFTWARE?!?