Posted on 07 April 2020 - 03:07 PM

Some texture packs are incompatible with motion blur, and Purpled's 16x is one of them. I use motion blur and that texture pack a lot, but I could never use them together, as whenever I use Purpled's 16x the screen would go randomly dark and bright - even though fast render was off. I am pretty sure I found a solution to it, the shadow.png and shadow.png.mcmeta cause it to become dark spontaneously. If you delete or change the name of those two items, then motion blur will most likely be compatible with that texture pack when it was not earlier. You can find shadow.png and shadow.png.mcmeta in \assets\minecraft\textures\misc. I hope this works for anyone who needs it, it worked for me, I just saw a lot of forum posts about it, and it was broken for me as well, so, hope this helps.