If you have a low-end laptop, install the PC version of Legend (800MB compressed, often on sale for $1). Then use Steam Link or Moonlight to stream to your phone.
Distributing highly compressed ISOs violates copyright unless you own the original game and compress it yourself. This paper does promote piracy – it analyzes the technical demand and community practices. tomb raider legend highly compressed ppsspp
If you're dealing with lag on a highly compressed file, try these adjustments in your PPSSPP settings : Switch between If you have a low-end laptop, install the