The latency and metallic sound could be settings in the Scarlett control mix.
In simple terms, I've had so many problems with my scarlett and Windows not playing nicely together which results in latency and a small echo ( you can hear the note played without effect. I aslo could not play 2 sound sources at the same time ( wanted to play along with youtube vids). I spent a long time with Ableton ( my DAW) and focusrite support teams basically saying it was windows as a result of competing
Yesterday I tried to install a webcam and use a different mike input and it screwed it again...ARGH.
In the end I played with the mix control ( avoided the zero latency setting), selecting the DAW input and output settings at random until it worked. You can change the latency settings in the mix control BTW.
I can send you my settings if that helps but I'm sure I've set mine up wrong in some way - I ended up trying multiple, random combinations before I got it to sound right.
My point here is that I assumed that windows, focusrite and the DAW were pretty much plug and play but I found loads of problems. Your issue is less likely to be your Kemper, so get those bits sorted first ( if you haven;t already). Then look at the profiles - I find different profiles work better for different applications so your live ones may not be of use to you.
Not sure if this helps or not as I'm a total amateur in the studio...
Thanks! Your issue sounds a LOT like what I'm dealing with. My Kemper sounds fantastic in EVERY other setting. Including when I record straight to our digital mixing board. So I know the issue isn't with the Kemper's sounds. It's somewhere after that. If you're willing to send your settings for the Scarlett, I'd certainly give that a shot. I will say, the Focusrite interface is anything but plug and play; it's a constant headache. So I'm guessing you're right, and my problem is in there somewhere. I'm not using Windows, I'm using a Mac, but again, I think the issue is the Scarlett 6i6.