I use oculus quest 2 and I can play with contact lenses (-5D) for a long time with no issues.
Recently I bought a pair of lenses for quest 2 from Aliexpress with the same power, so I don't have to use contact lenses. When I use them, I feel a slight discomfort that lasts for a while (maybe a few hours) after using them. It's minor, but it's there. They seem to curve an image a bit, which is not a problem to play, but maybe it's problem with eye strain. They have a great score, and the one scores are just from transport problems. Nobody else seems to have the same problem.
Have you ever experienced it? I would buy more expensive ones, but I feel that the lenses are all the same.