& @LuisP8
Read this:
TL;DR I had this issue too and what fixed it was uninstalling and reinstalling the plugin.rockandrole18 wrote: ↑09 Nov 2017 06:27 Last night I was trying to set up the plugin to work with ATS (recently bought it after a long time playing only ETS 2). Strangely, it was quite painful to get it to work my G27, even though it was working fine with ETS 2 earlier. The wheel was feeling very stiff with a decent amount of dead zone in the center, similar to the way the wheel feels when first connecting it to the PC before launching any game. I was very surprised by this, I thought maybe that was the way American truck' steering wheels should feel like but it felt really wrong because I wasn't getting any force feedback other than stiffness even though I had enabled engine vibrations in the '.ini' file earlier. I remember seeing some other people from a few pages back complaining about a very stiff wheel, and the way I was able to solve this/my problem, in the end, was by completely uninstalling and then reinstalling the Logitech Gaming Software. Immediately after doing just that, the good ol' FFB feeling which I remembered from the days when the plugin had worked for me on ETS 2 was brought back to life.
If that doesn't work for you, it may also be worth a shot to try to uninstall and reinstall your 2012 Visual V++ redistributable. That's mostly the advice that I can give because such problems are 99.99% of the time caused by a software/hardware issue, the forcefeedback should feel quite smooth when it's set up properly even with the default values, so there's no use tweaking with the .ini file to get rid of excessive stiffness.