I've managed to speed it up a bit, try downloading an app called SD booster and set the value to 2048 and set on boot, it increases the speed your phone accesses internal memory as well as SD card memory. So theoretically, the launcher should be able to access and pull up apps etc faster. This seems to have improved it for my phone so its worth a try.
Sent from my HTC Sensation XE with Beats Audio Z715e using xda premium
scrolling lag is majorly bad. like after i have finished swiping then it slides, after that its ok but first swipe is usually terrible