When I join my world and try to break blocks, I can break it normally but after I break it it instantly reappears and after a few seconds, it gives me my block as if I had 500 ping. I'm not on a server, I'm on my own singleplayer world. I don't even have any mods in my mod folder. I tried downloading different forge versions (this is 1.12.2), but it still did nothing. Here's the debug.log: https://gist.github.com/PresMuffin123/2339c245dfbb6289afcffbb6091dc219. I will have mods later so there is a limit to how low the forge version can go.