Thanks man, glad you like, i'm working on a complete rebuild of the theme and it's butter smooth even in 4k, I cant say for sure but its about 400% faster. I am without video software atm due to previous pc crashes, need better software first.
Another alternative would be to use flycast for retroarch, it's pretty good, not sure if its better than redream though. Flycast had some news on: https://www.libretro.com/index.php/category/blog/