mini delays and doesn't respond to Cura

Started out having a problem with Cura saying that the bed temp is fluctuating, but when I feel the bed it feels normal. I’ve checked the wires that go to the bed and the thermisotr. Both read normal. Additionally, the printer itself is not responding to commands in Cura. It takes 30 seconds, at least, for it to respond to a command, and even then it will only respond to 2 or 3 of the commands and then quits. I’ve checked the fuses on the board and double checked all the connections. They seem to be good. Any ideas?

Thanks in advance