Thoughtful and practical advice. I practiced martial arts for a number of years with my son.
Instructor would say: relaxed is slow, slow is smooth, smooth is fast.
I think the Navy SEALS say something similar.
I need to work on discipline of going slower longer 
It’s a very common beginner mistake to fret too hard. I periodically do a reset by spending a little time seeing how lightly I can fret before the strings start rattling. That’s the pressure to try and remember.
Your fretting hand won’t get so sore either!
(Edit for concise)
Maybe try anchoring on the string just below the one you’re chugging on. Looks like you’re hanging out 2 strings below.
For me, this makes my hand position a lot more relaxed and comfortable. Helps me pluck straight across instead of down at an angle.
This is a personal preference thing and your mileage may vary.
You could also experiment with rolling off different parts of the the finger tips. Like for my, because of the way my middle finger nailbed and fingertip are shaped, I get a smoother duumm if i roll off more like the corner of the nail instead of right in the middle, which means I have to angle my hand and arms a little rather than being straight vertical over the pickups. It’s harder to do when I’m playing seated, but standing it’s fairly ok.
Thank you… every idea helps to try!
Appreciate your help 
.
Super… thanks DC. I’ll give this a try as well.
I do notice the thumping seems less prominent when I’m on the E string, which suggests something with finger angle.
Cheers
Woh thanks for sharing this - I didn’t know Nick Campbell and now I’ve now watched this other video a million times 
Plus this interview is great. He talks about effort, stamina etc.
Dang, I was gonna post my cover of this song but he beat me to it 
not in a million years, but I’d like to think I could do something like this someday.
This was all super helpful stuff!
Well you can turn it into a Ballard this song is quite popular in some circle the crowd actually sing the entire baseline it’s amazing. Which means that you can hum the note and practice easily.
What I love about this recent concert is Joe used a $400 Sterling Bass and it sounded amazing.
Yeah! that version is crazy good.
This was my favorite version before, this Polish girl is so good. This was her earlier video too. I’m so jealous of her plugging intensity.
Again playing on a $200 Sterling. I think it’s this Video that MusicMan and Sterling started sending her some basses, she was talking about how she liked the tone of Lakland basses. 
It’s really special to watch a bunch of people on stage who are all clearly having so much fun!
Right? It’s so infectious.
Absolutely!
This video is amazing. I keep watching it. Amazing his efficiency of motion. Thanks for sharing. Inspirational.
I’m assuming he is only plucking with 2 fingers… at times it looks like his ring finger is jumping in.
Just 2 fingers.
It was said that this video is a fake! He actually played it at 4 x the original tempo and slowed it to half speed 
Have been following Julia for a while now, love pretty much everything she puts out!
Ooh, gotta check this out, thanks for sharing!
This is awesome. His explanation at 44 min in is fantastic. Love that he included his practice routines and exercises.
Thanks for sharing this.
Thanks to all who shared ideas with me. I’ve found two that seem to have promise (angling plucking fingers slightly and relearning where on my finger I start my pluck). Need to unlearn some bad habits so it’s back to slow and steady with the metronome… but better now than later. Appreciate the kind support!! 
Oh, I didn’t realize who this was. I’d seen his crazy fast playing videos before… but didn’t realize how funky he was until I started watching the interview you posted. Dang is he good!
I’m jumping in!
The way to practice this is to set a metronome very slow - about 70 or 80 - and play the smoothest, most connected quarter notes in the world.
The problem you’re having (disagreeing with @Al1885 only in this specific context, otherwise his advice is solid) is in your right hand.
Your fingers just aren’t properly coordinated yet.
You’re getting a finger on the plucking string one teeeny micro-second before you’re actually striking the string, and it’s creating that teeny micro-second of mute.
This is super common, not a problem, just a symptom of beginning a long journey.
If you focus on making sure your finger is only ever touching a string to be played when you are striking or when you are muting on purpose, this will be corrected.
The slow tempo, focus on legato playing is the cure.
And that’s where everything @Al1885 said will fully come into play, because you’ll need that coordination between plucking and fretting, and the sustain and strength in the fretting hand to make sure your sound doesn’t ever disappear unless you want it to.