I just answered this question on one of the Beginner to Badass lesson pages, and wanted to share it here since I thought it might be helpful. The student asked:
“When doing a “reach” up or down a string, like going for the C note on the A string in this groove, is it better to lift the left finger and move or slide? Lifting seems cleaner but slower. Sliding seems quicker but you get the string scrape sound.”
What you’re calling a “reach” I would call a “shift,” just for terminological clarity. In general when shifting, you want to keep your fretting fingers touching the strings as you shift (NOT pressing, just touching) for muting purposes. The string scrape sound you’re hearing is actually pretty innocuous in the context of playing with other people, even though it seems really noticeable in a practice context.
And sometimes you can hear that scrape sound, it’s just part of the deal playing an instrument with metal strings. Like listen to this solo banjo recording of Bela Fleck, there’s string noise all over the place and he’s arguably the best banjo player alive (at the very least my favorite) –
So moral of the story - don’t worry too much about that particular kind of string noise, and keep rocking! Let me know if this is helpful or if you have related thoughts/questions?