Thank you very much @Frylock. I think this is very accurate diagnosis.
First of all, I believe I hold the pick a bit different than most players. I hold it between my thumb and the very fleshy part of index finger, like this:
NOT like this:
This naturally tilts the pick so that it hits the strings with trailing edge and favours UWPS. As far as I can tell, I pick with wrist deviation exclusively.
The way I see it, this also makes DWPS a bit difficult for me.
The 3-note per string patterns seem easy as long as I:
-start with a downstroke (which is natural for me)
-stick to UWPS
-tilt my forearm inward a bit (pronation).
But 2- or 4-n-p-s patterns are difficult because of the UWPS, and playing them with DWPS doesn’t feel comfortable. Incidentally this also makes difficult for me to play a lot of riffs, if they’re written and arranged to start with downstroke and DWPS.
Another thing, the sound is more trebly than I’d like to. I think it’s because of angle in which the pick hits the strings.
Last thing, there is not enough string hopping - my forearm stays flat and tense in one position when picking and I’m having difficulties with changing this. This makes 1-n-p-s patterns especially difficult. Sure I could sweep them but sometimes I’d prefer a different kind of articulation.
Now, I wonder if I should:
-get used to starting 2 or 4-nps patterns with an upstroke and use UWPS? It seems effective, but unnatural for me since I’ve trained myself for a long time to start with dowstrokes mostly
-tilt my fingers in a different manner in order to change the angle of pick (sort of forced DWPS)? This is something I try to do at 0:47 (std speed) and 1:34 (half speed) of the videos.
-tilt my thumb down? (feels very unnatural, hardly possible)
-or maybe relearn how to hold the pick in a different manner? (possible but this would require a lot of time, not sure if it’s worth the effort)
And I’ll definitely post more videos, I’ll try to do that tomorrow.