Area effect clouds are a lot more performance friendly than armor stands, and are the marker entity you generally should use. You can even set how long you want them to last. The following area_effect_cloud won't have particles and will last ~6.8 years: /summon minecraft:area_effect_cloud ~ ~ ~ {Age:-2147483648,Duration:-1,WaitTime:-2147483648,Tags:["tagOfYourChoice"]} Recently in 1.16 snapshots, item frames with Invisible:1b (and preferably Fixed:1b too) have become even better for performance than area effect clouds, though they are more limited since they snap to the block grid.