Hi @7x8p6r,
I’ve encountered this bug in all 2022.x.x that I have tested (see Possible Bug: 2022.1.1 - 2022.1.3 URL Parameter not included in filename) and it does appear that there is a slight risk of data loss if two participants run the experiment simultaneously (one participant might overwrite the other). The default timestamp includes milliseconds, so the risk of this is quite low.