Have you tried a Batocera 256GB build? Which "New" version are you running—v39 or v40? Let us know in the comments.
While you can find Batocera builds ranging from 64GB to 12TB, the has become the most popular choice for several reasons: batocera 256gb new
A 256GB build looks "new" and professional because of the interface, not just the games. Have you tried a Batocera 256GB build
Optimized specifically for the Pi 4 and the new Pi 5. Final Verdict no Windows install needed.
Boots directly from USB; no Windows install needed.