I was able to grab this monitor for $110 and decided to calibrate and try some games on it. I did not notice more than average IPS glow or any lag or ghosting. Color wise here are the settings I used. Brightness (120 nits): 70 Contrast: 50 Color -> 'User' Red: 42 Green: 44 Blue: 50 Everything else was left default. Using my Calibrite/X-rite ColorChecker colorimeter, I was able to get an avg deltaE of about 0.3 and 94% sRGB gamut coverage, 134% sRGB volume with my specific panel and ICC file. The only issue I have that when the display goes to sleep, it disconnects/reconnects on wake up. That means that my desktop has a slight delay before being responsive whenever my monitors turn off when idle. Other than that design flaw the monitor is great and well worth it for gaming and media creation on a budget.
Monitors
KOORUI 27 inch Full HD 1920 x 1080p PC Gaming Monitor, 165Hz 1ms, DCI-P3 90% Color Gamut, Adaptive-sync, FreeSync Premium, 2 x HDMI, DisplayPort,Black black 27inch/FHD/165hz