I have three bass shakers 1) buttkicker gamer, 2&3) TT25 dayton bass shakers. 1) bk is connected via a usb sound card. This shaker is visible in windows sound devices and can be tested in simhub(successful), but not in windows sound device list(i get green bar action but no bk output shaking. 2&3) are connected to a nobsound amp/soundcard and are present in windows and output test successfully in windows sound devices. 1) and 2&3) are present in sim hub and produce shaker output in simhub testing in the correct sound devices. Simhub shows that rfactor 2 is connected to simhub. There is no evidence of shaker output in rfactor 2 when playing. I have had evidence of shaker output in rFactor 2, for 1) alone and in combination with 2&3 previously. I updated to simhub 9.01.8 from simhub 8.4.6 before this observation. I have since reinstalled simhub 8.4.6, but still have the same failure to observe shaking in rFactor 2. Simhub dash overlays are also functioning correctlyin rFactor 2. I am wondering if anyone can provide assistance or information to fix this issue?