When the game gets really busy with lots of units, playing on normal speed is often faster than playing on faster speeds, as the AI needs time to make decisions.
If you check the Victoria Tech support forum, there is a FAQ stickied, that address slow downs, everything in there including renaming some files applies equally to HOI2.
Also make sure you have the latest patch.
If you check the Victoria Tech support forum, there is a FAQ stickied, that address slow downs, everything in there including renaming some files applies equally to HOI2.
Also make sure you have the latest patch.