You could try updating your network adapter drivers. Idk, i'm pullin' at straws. But first, make a system restore point in case the drivers mess ya up even more. I'd look for a driver updater software. Sometimes, it's easier to do it through one of them. I've used IOBit's Driver Booster software. You can also find it manually, you'll just have to do a bit of searchin'
As for the character issue, do the reset as Kynvuu pointed out and if you still are having the issues loading the characters you may have to remake them entirely. But, i'm almost positive resetting their homes will help