Went to open Ghost Recon Breakpoint and the display went very weird. Restarted PC and display was only showing on half the monitor. So tried several things to try and isolate the issue and I have come to the conclusion that Displayport has failed as I am not getting any signal to the main monitor or a secondary monitor. I have come across a possible solution here but am reluctant given that Displayport has been fine. https://forums.evga.com/2080ti-Black-Displayport-not-working-m2895372.aspx I am currently using HDMI.
Ignore the above because for some reason all is fine now, I possibly managed to change the source from DP to HDMI though that does not explain the secondary monitor not working.