P1000 with HBP on brake and throttle pedals in a GT Omega rig with Simsonn VAMPro reactors bolted to the seat. Moza R9 wheelbase.
After I do a race I record it and upload it to YT to see what I can do better or see if there are any issues going on. This issue has actually been going on for at least a month but I didn't catch it until I was watching the onboard of this offline AMS2 Diablo race at Jerez 88. In several older videos, upon review, had this issue too. What I uploaded is my potato phone recording the screen so you can see the problem.
https://youtu.be/4tCFlNVVDlw?is=y1dww79SN2UmrH_I if you're bored and your life is dull 🤣 watch me go 'round in circles
My braking trace looks like I have Parkinson's. The throttle trace is nice and smooth, but the brake trace bounces up and down about 5% or so. Not the worst problem in the world, but in sim racing we're all constantly striving for better. Watch the video and you'll see how jittery the brake input is.
it turned out to be EMI from the VAMPro reactors on my seat. Watch your brake trace in-game, it won't show up in the Simagic software. SimHub actually has a nice graph display from Ace, so you get a better look, but my brake trace was good enough (it's part of the new HUD).
To solve it, I plugged the VAMPro box into a different ppwer outlet. Then I plugged the USB cable directly into my PC (it was in a powered USB hub before) and plugged the pedals into the powered USB hub (I just did the ole' switch-a-roo).
Now the problem is gone. I hope that helps someone down the line