I'm not an expert, so take what I say with a grain of salt.
I noticed you have Jasco switches.
I had lagging problems on my C7 with my Jasco switches that were solved by selecting 'alternate exclusion' method on @JasonJoel 's driver.
I don't know how behavior would have changed from C7 to C8 for you though.
Did you go to the stock driver for the switches, or something?
