Got a new secondary monitor but screen turns grey on start up

[TomaytoSoop]

Hello friends, I recently got a new 144hz monitor to use as my primary and am using my existing one as a secondary. On initial set up, both screens worked fine and everything was running smoothly. On my next start up however, the primary screen went grey and the secondary goes black(sees no input) after the booting sequence. I tested and found that both monitors will work fine when plugged in on their own, but when plugged in together will cause this grey screen effect. I thought i was able to fix it by updating GPU drivers, but the next day it happened again. After a bit of time trying to fix it, I found that switching the hdmi ports worked. However, the next day it happened again. So I find that it IS possible to run both monitors at times. What could be the problem?

Im running a 1070 on a ryzen 5 1400 cpu at 450W psu, not overclocked.