TL;DR - need a game capture program that doesn't write temp files to c: drive.
I'd been using the recording software (whose name escapes me) that is in with the AMD drivers when I had a Vega card. This was perfect as it wrote directly to an AV HDD that isn't my OS drive. However, I switched to a 1070 and am a bit stuck finding similar software that I can use to capture instant replays (i.e. writes/records all the time and then one can record the last minute or so), and also starts automatically when a game is launched.
I've tried using the Geforce software. Although the recording/capture location can be changed to the other HDD, it still writes the temp files to the OS drive (under users/appdata) and then writes the recorded bit to the HDD when the capture buttons are pressed (I know that by the fact I can't hear the HDD until such event occurs, unlike the AMD software where the HDD was running all the time). I don't want this as the OS drive is an nvme. Likewise for the inbuilt Windows game bar/recording suite - I can change the end location to the HDD, but it always writes to the nvme OS drive.
So, any suggestions for such a program that doesn't write to appdata along with launching itself alongside games? Other option is setting up a junction in appdata, but pretty sure that will just end up writing to both drives.