Hi,
I was having issues with my F16C module not being as smooth as the FA18C module so unchecked the "Mirror" option within my TrackIR settings (screenshot below). This seems to cure the problem in case anyone else was having 'stuttering' caused by TrackIR that is.
Kind regards.
My Specs:
AMD Ryzen 5 3600
Asus Prime B450-Plus
Sapphire AMD Radeon RX580 4GB
32GB Corsair 3000MHz
Track IR5
Saitek X52 Pro HOTAS