Vanillaccurate will be coming to OSBES and similar shaders at 128x resolution! I even tried using a 256x version but MCPE crashed, I guess my phone doesn’t have enough memory to support such a pack.
Anyhoo here are a couple of screenshots of the upcoming 128x version. Performance is slightly lower than 64x but I was expecting a bigger impact so it was a nice surprise. It’s a bit choppy on my Pixel 3a but still playable. I suspect high-end phones would have no issues at all running it with solid framerates.