server lags, buttons break and console is scrolling fast

server lags, things appear broken, and EVERYONE's console is scrolling rapidly.   It feels like something is in an infinite loop, the server's crashing , or something is trying to use a resource that is locked and its trying infinitely to use it . (permissions or something maybe) .   Visual things like furnaces restart smoking and you dont see the fire while this is happening; other things like the use key doesnt work during this time.   If i could take a video (in the time given) , i would have.   But imagine this scrolling so fast you have to screenshot just to be able to read it (see attached picture); this picture was scrolling for 5 minutes+ solid