Wayukian Texture Pack [realistic with no lag] 1.12+Published Sep 6, 2019
The Wayukian Pack is an incredibly detailed texture pack which was originally created for the PC version of Minecraft, but it has now been ported to Minecraft PE. It suits best for medieval/RPG type of maps when you want a more old looking world. As you will see in the images further down castles and other old types of builds look quite amazing.
Download Resource .McPack
Settings > Global Resources > Activate the pack