I have a 670 and never once had any issues as you've described. The monitor sounds like the culprit to me.
***PROBLEM SOLVED ***
Thanks for your reply. Do you shut off Acer IPS 1440p 144Hz monitor only with power off button, without turning off computer? Do You have same monitor?
I usually don't power down my computer, I only clicked off monitor button with my previous monitors. I am impatient and do not like waiting for a desktop screen. Last night I powered down computer, the standby orange light came on, but after few seconds went off.
Today I am happy to report when I powered on computer, the monitor instantly turned on by itself , I didn't have to click monitor power button! I have never had a monitor with standby before, but also have never had instant access to my desktop when I login.
I will still upgrade my video card but I have no complaints on this monitor. I have had it less than a week.
I don't have overspill of light from blue power button as others described. I don't have any dead pixels.
I don't have any IPS glow and I searched for it.
I don't have any back light bleed.
I have monitor set in Gsync 144hz with no problem.
I hope everyone else who is experiencing problems, of any of the above listed will win the perfect monitor lotto in replacement.
I bought from competitor, not sure if I can mention it so I won't, but if there is a bad quality control batch, as happens in all monitors it seems, it didn't happen to me. I surmise this monitor has a standby mode with orange light for a purpose and that means after powering off computer, going into standby, means instant access to desktop, after login screen. When I just click power off on monitor, it has no way to enter standby mode.
This is a fast monitor in all ways for me. I do not regret buying it, and still believe it is the best I have owned.