usually because you run out of device RAM, need more than 4GB RAM left to run the game smoothly. however after 2 hours, you need to reboot the game to refresh the RAM amount.@Legend or @mods. Whenever we on the "show all dinos " the game is stable for a min then the dinos start to flicker and game hangs. does anyone else having same issue.
And if you do a lot of raid, reboot after 4-5 raids done