I do feel like they respawn in certain spots BUT most of the time it is just random. Every epic i caught never was on the same location, yet. Rares kind of spawn in the same locations but once again also random.
A general respawn happens every hour it seems. For example; i’ve noticed dinosaurs ‘spawn’ in at xx:03 but once again; especially rares+ and such still remain somewhat random and spawn after or before this time. Just ‘a big chunck of dinosaurs’ seem to spawn during this time. Perhaps every spawn has a fixed timer not compmetely sure.
Most likely coincidence but i also cant deny certain spots seem to spawn more rares / epics on a regular basis than others. I definitely started checking out numerous of those spots to investigate it even further.
Nokia 6.1 2018 no gps issues
Offcourse at times it is slightly bugged and flickers between random locations im not and returns to my current location again in a couple of seconds. I believe this is considered normal - the GPS is sometimes bugged and flickers from one location to an other - but this does not happen on a regular basis, very occasionally.