Using VSR to up my resolution in games give me massive input lag but only for my keyboard. My mouse still works perfectly fine when its enabled but there is massive input lag with the keyboard until I restart my PC. I've tried DDU and I've also tried updating my drivers with no change. I've had this issue for months.
CPU:Intel Core i5-4570 3.20GHz
GPU: Sapphire RX 480 8GB Nitro
OS: Windows 10
MOTHERBOARD: ASRock B85M-ITX
Monitor: ASUS VG245H FreeSync Monitor
Turns out a program called SuperF4 can cause this to happen.