What would be an ideal ms loss to aim for when debugging?

Currently, my object heavy game averages around a total of 15 ms when previewing on my PC. It’s passable but obviously this might perform poorly on other peoples’ machines. What do most people aim for when testing for ideal performance across most platforms? Thanks!

Personally i think the best way is to network preview on mobile every now and then and if it runs fine there it is probably optimized enough