In-Process GPU?

[ehm.education]

What does this option do? Should I turn it on of off when trying to conserve power on a laptop?

[D'Avekki Studios]

That option was mainly a toggle for some systems that couldn't run Dekker at all, or to try and get Steam overlay working - but essentially tells Chromium (the underlying player) to attempt to use hardware enabled graphics in its own thread. So it would depend on how much power your CPU drains over your GPU in terms of conserving battery life. Try toggling it and pick the performance you prefer - if anything stops working you can manually tweak those settings in the init.json file in the game root install directory.