I had thrown Minetest on to several machines when I noticed water felt different between two very distinct systems. The speed at which the player sinks in fluids appears greater on a lower end machine and slower on the higher end. Here is a keyframed video comparison I made for reference: https://youtu.be/_CiVPL5fSFU (Crummy PC left, fast PC on the right).
Each system is on 0.4.12 stable (Ubuntu) with like settings. The notable difference is the hardware, 1. {A10 3.9Ghz, 8GB DDR3-2400, SSD} 2.{Celeron 1.2Ghz, 512MB SDRAM, PATA HDD}. Is fluid viscosity linked somehow to hardware speed or am I just an idiot and have wholly misidentified this?