Game lagging

[AlbanRampon]

It depends on your system and exactly which issue you are seing.
If which screen is the primary display has an impact you're seeing something else.
If you have a dual graphics card system, Windows 10 Anniversary and Creators Update will use the graphics card used for POST (BIOS and all). The workaround has been to disable the low end graphics card as then Windows is forced to use the card that's left.
Of course, you need to have a platform flexible enough to give you the control.

Where you can influence the timeline is by using the Windows 10 Feedback Hub feature in your OS, as the number of requests will make it even more obvious that people are relying on this.

You could use the following wording: "I can't use my high end graphics card through Indirect Display and this impacts graphics performance. Instead it's using the low end integrated graphics and I can't disable it from the BIOS".

Regards,
Alban