Steering Wheel Issues (Lag, input problems)

Alright, so I've been having two peculiar issues recently. These problems only started happening after the 0.4.0.0 update.

First of all, my steering wheel (a Genius TwinWheel F1) worked perfectly in BeamNG with a custom inputmap before April, and back in early May before the 0.4 update, so I know it's probably not my wheel causing problems.
Today, I played the latest version (0.4.0.4) and attempted to add my wheel buttons/axes to the controls menu and nothing would save. The game recognizes my device, the problem is after I click the plus button next to an action and it detects whatever input I give it, I press save and it does absolutely nothing. For example, I try to add the pedal axis to "gas", but after clicking save, nothing appears next to "up". I try this with keyboard buttons and it works fine.

Secondly, possibly related, as long as my wheel is connected to my computer, there is enormous lag produced whenever I apply keyboard input (between 0 and 2 fps), but the lag disappears soon after the vehicle stops (>30 fps). I've tried lowering my graphics settings to the absolute minimum and changing fullscreen/refresh rate and it doesn't help. My desktop specs are well past the minimum requirements (GPU is AMD R9 270X, CPU is AMD FX 6300, 8GB RAM, etc), so that's not the issue because as soon as I disconnect the wheel, the lag vanishes immediately.

I would really appreciate any kind of assistance because this is bothering me. I tried very hard not to forget something simple and look like a moron, so any advice ought to be helpful.

 

Whoops, I meant 0.4.0.4. Sorry for the confusion.

 

Alright, I deleted the BeamNG.drive folder in my documents, and something interesting happened. Even though the input-based lag was still there, when I tried adding the y-axis to throttle (both pedals are on that axis...) it actually added that input to the action. But after I edited and then deleted the y-axis input, I was unable to repeat the process and it did exactly what it was doing yesterday.


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EDIT: Okay, I started the game right after the new update (0.4.0.5) downloaded through Steam, and the lag problem is gone. Unfortunately, I'm still unable to bind my Twin Wheel's buttons or axes to the controls.

 

Here is the torque3d log file after launching and repeating the process:

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I'm now attempting to edit the .json inputmap for the wheel (I believe "documents/BeamNG.drive/settings/inputmaps" location is correct?) using Notepad++. I might just have to manually add each input to the bindings in the .json and then see what happens from there. I'm backing things up just to be sure I don't break anything permanently.

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I have solved the problem. After adding exactly one thing to the .json file for my wheel, I'm able to add, delete and edit the wheel functions in the game controls. Don't know why this was necessary, but it worked. I just copied the "acceleration" binding line from the keyboard .json and pasted it in the wheel .json and changed "up" to "yaxis".

Word of advice for people with 2-axis wheels (one for pedals and one for wheel) use the "accelerate and brake" option rather than just "accelerate" or just "brake" and use the "steering" function rather than "steer left" or "steer right".

 

Im encountering the same issue, my problem is that i dont even have a .json file for my wheel.