Three other things you could do:
1. If it truly is an i5, then use ThrottleStop to force your CPU to constantly run at the highest speeds it can without overheating (Windows only). However, if it's an i3, then this shouldn't make any difference.
2. Use Linux so that you can use the faster Vulkan renderer with that Intel iGPU (Ubuntu 18.04 LTS should be launching sometime this month).
3. Swap out the 2GB RAM stick for a second 4GB RAM stick (or swap the 4GB for another 2GB); mixed memory configurations such as your 4GB+2GB config can reduce the performance of your integrated graphics.
1. If it truly is an i5, then use ThrottleStop to force your CPU to constantly run at the highest speeds it can without overheating (Windows only). However, if it's an i3, then this shouldn't make any difference.
2. Use Linux so that you can use the faster Vulkan renderer with that Intel iGPU (Ubuntu 18.04 LTS should be launching sometime this month).
3. Swap out the 2GB RAM stick for a second 4GB RAM stick (or swap the 4GB for another 2GB); mixed memory configurations such as your 4GB+2GB config can reduce the performance of your integrated graphics.
Dolphin 5.0 CPU benchmark
CPU: Pentium G3258 @ 4.5GHz 1.24v
GPU: Intel integrated
RAM: 4x4GB Corsair Vengence @ DDR3-1600
OS: Linux Mint of some variety + [VM] Win7 SP1 x64
CPU: Pentium G3258 @ 4.5GHz 1.24v
GPU: Intel integrated
RAM: 4x4GB Corsair Vengence @ DDR3-1600
OS: Linux Mint of some variety + [VM] Win7 SP1 x64