I think you translated this a lot different way...
Not only tempo is fast but also you changed this exercise's feel, rhythm pattern.
Basically each beat you need to do "Down Stroke" and "Up Stroke" with muted note. And I think it is better not use any reverb because you can hear any noise isuue part.
Did you watch my demo video a few times? This exercise is not easy to do... so please take your time! No need to hurry. I would like you to notice that you changed the original rhythm pattern to your own way.
Please watch this video a few more times. Check your tempo. About 50 per beat.
https://tomovhxtv.vhx.tv/videos/ft-root-3rd-7th-swing-groove-technique
Tomo
Oh my gosh you are right, lol… sorry, I did just REWATCH the R37 lesson. I will try again…ha ha whoops.
I guess I was made to create.