Horrible input lag with DirectInput devices

[m4ti140]

KSP version: 1.4.3 64bit (win10) non-steam

Issue: As of this version all Direct Input devices (like literally every single joystick/hotas on the market) have horrendous input lag, which gets worse with low fps. At stable 60fps it's around 0.2-0.5s, but at low FPS and high CPU load (with high part counts and/or graphics mods) it grows to as high as 1s and above, making analog input absolutely useless. Both keyboard input and xinput devices (x360 pad) are unaffected, the reaction is instantaneous regardless of FPS.

Log: https://1drv.ms/t/s!ArMDWm49dN3Cgb0No1fRmIdnvzYd4Q

Specs: MSI GE62 6QC: i7-6700HQ @2.6-3.3GHz, HD Graphics 530/GTX 960M (Optimus), 16GB RAM, Samsung 960 Evo 250GB SSD/1TB HDD, https://1drv.ms/t/s!ArMDWm49dN3Cgb0No1fRmIdnvzYd4Q

Fresh install

Edited May 3, 2018 by m4ti140

[soulsource]

Try using Advanced-Fly-By-Wire. I detailed how to get it running with 1.4 in the other question about missing Joystick/Gamepad support on Linux. Beware though, that my build of the mod is only for Linux. For Windows you'll need to compile it yourself, using the appropriate project file.