Expensive proprietary G-Sync is finally dead. In late January, after more than five years of gouging consumers with high G-Sync prices, NVidia finally quit blocking VESA standard adaptive sync (aka AMD's FreeSync) for GeForce GTX 10?0 and RTX 20?0 graphics cards. You should be able to purchase an affordable FreeSync monitor to connect to the DisplayPort output from your NVidia GeForce graphics card for variable refresh rate gaming.
When I use Remote Desktop to connect to my office desktop, I get a session that matches the resolution of the remote client, not the monitor connected to the desktop.
A single GeForce GTX1070 desktop graphics card is a okay for 2560x1440 at 60 Hz. It looks as if your pair of laptop GeForce GTX1070s should be able to handle 3840x2160 at 60 Hz.https://www.notebookcheck.net/Mobile-Gr ... &directx=1
i7-9700K, NH-D15, Z390M Pro4, 32 GiB, RX Vega64, Define Mini-C, SSR-850PX, C32HG70+U2410, RK-9000BR, MX518