Tested the G515 LIGHTSPEED TKL (linear) against two other boards and saw no connectivity advantage; decent, with a nice actuation force and dongle storage, but textured keycaps and a TKL layout they didn't love, so they're returning it.
“But after testing it next to the other 2 keyboards I haven’t seen any differences in connectivity or lag. Seems like it’s not that helpful. Other than that, it’s a decent keyboard.”