MetalliC

try to update your video drivers. for sure this doesn't happen on ATI/AMD or Nvidia GPUs.

no ideas then

I suppose I have to do Xinput deadzone handling an option, because Sonic games require analog 'noice' to function correctly. can anyone test Sonic games with DInput controllers (and it's...

which exactly Nulldc input plugin was used ? there is 2 of them - standard one, which have deadzone handling and potentially can have such issues as well, and one...

if you use DInput controller - you have to disable deadzone, ie set it to 0. in the case of XInput there is no solution at the moment. possible next...

does any other P2 inputs works ? (can be seen in BIOS JVS Test or Game Test mode - Switch Test)

try this plugin https://yadi.sk/d/hJkqI0sy3VGDeV and let us know if it solves the problem.

which one is reported pressed ? JOY0_ANL3_KEY or other one ?

PS: updated plugin is mainly addressed to fix Dualshock issues, it have been verified to solve DS3 troubles. will be good to know if it helps in case of DS4....

can you please provide screenshot similar to attached ?  press Win+R - enter there "joy.cpl", select gamepad and press "calibrate", then take screenshot(s) of available analog axis(es) and data...