No problem and you are not wasting anyone's time earlreich so don`t worry.
Got your Speccy link
As mentioned previously your GPU and RAM are not up to the specs required to play Hearts Of Iron IV and after looking at your Speccy report we can see that your MB and CPU are running hot and especially for a computer that is not under any load, once you start gaming the temperatures will increase and your processor will be throttled back to prevent it from frying and that is why you are getting the drop in performance.
Solution, upgrade your RAM to 8GB (2X4GB sticks) fit an add on video card** and upgrade your cooling system, for the most effective cooling if possible you should have at least one cooling fan at the front of the case to draw in cool/clean air and one at the rear of the case to expel the hot air, this is called the pull/push method, good cable management and a regular clean out of heat trapping dust will also help.
We understand that folk cannot just go out and spend cash on upgrades and may have to do things as funds become available, in the least expensive order you should improve the cooling fans > upgrade the RAM > fit an add on video card.
** Make sure that your PSU is adequate for any add on video card that you may purchase, ask here if not sure.
AMD A4-6300: 71 °C
Richland 32nm Technology
2.00GB Single-Channel DDR3 @ 669MHz (9-9-9-24)
EMAXX TechnologiesInc EMX-A68FM2HD+ICAFE (P0): 116 °C
512MB ATI AMD Radeon HD 8370D (ATI): 17 °C
To summarise, your computer is below the spec required for the games you wish to play, the computer is overheating and the overheating is worsening once you put the computer under load.
I also noted that you do not have any AV protection, bad idea as you are putting yourself at risk of malware attack, would suggest that you download a free AV such as MSE