I've heard that Win10 is to blame for laptop related stuff and discrete graphics. If it is possible, try booting from a Win7 drive (external or otherwise) and see if the system uses the discrete graphics while launching FL.
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PSA: If you have been having stutter/FPS lag on Disco where it does not run as smoothly as other games, please look at the fix here: https://discoverygc.com/forums/showthrea...pid2306502
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