Does this issue answer my question? I do not see a single fire particle FX in the game on my PC. Furthermore, I have removed your solution simply because my PC is not capable enough to display both water and fire particle FX at the same time.
My PC was suffering from performance issue, I can’t see both fire* and water** particle FX in the game.
*: I installed torches in my unfinished condo, or using my flame thrower to see if the flames are present.
**: I used my water gun to see if the water jets are present or not.