u/EmperorAlpha557

I started learning guitar about an year ago, it must be around 15 months by now.

I have reached the point where the songs im working on our only limiting me by the speed factor. For example these are 3 songs i've been working on

1. Buried Alive (by a7x)- I haven't gone past the solo, I can play the solo note by note...yes but in the same tempo? no I have been gnawing away at the tempo since September 2024 but my improvement in the tempo is just maybe by like 20 bpm at best.

2. One Day Remains(By alter bridge)- Started working on this one maybe 3 months ago and i see the result for this one a bit more clearly, I can remember making progress on tempo for this track and im maybe up to 90 or 95% of the speed

3. Bark At The Moon(Ozzy..RIP)- Started working on this one just a little lesser than a month ago, I'm stuck at maybe half the speed of the original, I can't seem to speed up.

How do I get past this and stop this from clouding or slowing me down?

I have always wanted to come up with chords like how opeth did

And one thing I've been told and I've noticed is he uses a lot of minor 7th and suspended chords etc

I understand learning some basic jazz theory would help but how do I apply it into a metal or melodic context instead of basic major/minor/power chords ???

Same as title