Fanthom
Also known as Strawberry
Do realize that the game's engine dates back to the 90s, so it's not surprising that older hardware and especially older versions of Windows will work better.
The OS installed on my old laptop is Windows 8. This led me to install 8 on this computer. It can't be an hardware problem (I've hosted with this computer during versions 2.0.x). Maybe some kind of software conflict? Messed up Windows updates? I don't know. At least I know it's not a Router related issue.