@pastrychef,
Is there a guide describing what each fan parameter is actually changing or doing in VGTab? The difference between idle and target temperature is a little confusing, but I feel like I may have figured it out. Currently, my Vega 56 fan issue is considered "resolved", from my perspective, with these settings:
idle: 1500
target speed: 4936 (MAX slider)
Min: 400
Max: 4900
sensitivity: 6977 (MAX slider)
target temp: 45C
power range: 50%
I have been using LuxMark to trigger a load on the GPU to see how the fan responds in the terminal. So far, with the above settings, everything is good. The fan speeds up and slows down as expected and as needed. The biggest point is it is quiet under regular conditions (desktop - no load).
Idle Speed: When trying to think about this logically, I figured the idle speed would be under no load, of course; for example, at the desktop...not much going on.
Target Speed: I believe the target speed is related to the target temperature. I believe when the target temperature is reached, the fan will increase to the target speed as needed based on how high the temperature goes above the target temperature. For example, with having the target speed set to the MAX value, the fan will potentially increase to the target speed if needed to maintain the temperature around the target temperature. If you were to reduce this target speed value, I'm assuming the speed would not increase above this value (going to experiment some more on this).
Sensitivity: The sensitivity seems to work best on the MAX value. The fan seems to increase and decrease the quickest at this setting.
Target Temp: The target temp determines at what temperature the fan starts to increase above the idle value.
Power Range: I'm not sure what this is. Is this related to the GPU or the fan? Would reducing this value result in better performance as the card would not be able to reduce power as much to maintain temperature control? Or is the opposite true? Is this true at all?
I'm looking forward to any clarification you may have.