Its a weak point in the laptops layout. Under that front right is where your hdd is. Hence by putting pressure there you are actually applying pressure onto a mechanical hdd. Effectively stalling your hdd/ making it stutter/fail
This is great overall router. Decent price ranks better than the ac2400 version for alot of categories
below is the rankings of current routers
Its likely that they do not have the SLI profiles correct for 4K gaming at this moment in time. That is entirely up to the developers in those terms. Unfortuantely most developers of games like saints row did not think ahead to 4K sli profiling or SLI profiles at all.
This is what you do. Go into mobo uefi and check that both the gpus are being read in the bios. Once that checks out than make sure that there isnt some setting preventing from them working together. such as lucid vmp will sometimes do