I'm developing a small scale game which I hope is playable on laptop. The overall poly is lesser then 1500 (including all my characeters and level), no dynamic light, no shader or any fancy stuff except some 32-bit TGA textures and sprites.

When using the A7 Pro trial, I can run my game on laptop at 60 fps which is good enough for me. But then I bought the Lite-C Full, converting my level to seperate entities. Now the fps on laptop is 24. Physic start acting strange due to low fps. Why it is so different Full vs. Pro version?

All my questions below are in term of FPS not loading time:

Q1: Does overlaping entities reduce the FPS? Imaging you have 2 walls and some of the the polygon intercepting each others. Because in my experience on OpenGL, overlaping obj reduce the FPS. So if I want to place a cube on a floor, I have to put it a little bit upper and cannot touch the floor.

Q2: Does number of polygons for invisible entity (set(obj,INVISIBLE)) effect the FPS? Lets say I have a room with 1000 balls where each ball has 2000 poly. Everything is not move and I get 60fps. Now, if I set 999 balls to invisible. Will my FPS improve?

Q3: Same like Q2 but insteed of using INVISIBLE, I set the TRANSLUCENT to 0. Will my FPS improve?

Q4: Which one is faster, a 157x176 sprite or 512x512 sprite?

Q5: Which one is faster, 2 entities with 500 poly each or 1 entity with 1100 poly?