Constantly disconnecting from games online.

I’ve been disconnecting from games for a while and it’s starting to get very frustrating. It mainly happens in MMORPG games. It happens when Im in loading screens or running around. On Elder scrolls online it’s very easy to spot because when it happens, I can’t attack but I can still run and open up my map. I just have to wait about 20–30 seconds before it actually logs me out. It can get me killed and its very annoying. My family doesn’t notice this problem as none of them play games, it’s really only affecting gaming. I’ve tried opening ports for the game and Ive reset my router but nothing seems to be working. Am I missing something? If anyone can help me, I’d be forever grateful.