Ultra speed not working as it should

Ultra speed 3 is not working as it should, When I activate speed 3 in the game it simply returns to speed 2 after a certain time, and it has nothing to do with Sims sleeping and I don't have any game expansions or mods. This happens when all the Sims are sleeping too, he suddenly stops having speed 3 and rarely goes back to 3 but soon goes back to 2, and this is annoying. I don't know what's going on, but I've had The Sims 4 for years and this has always happened to me, and I've stopped playing countless times because of it and I don't know if it's my PC or not.I wanted to know if there is any mod or a complaint to EA because I don't know what else to do... I saw several people from some forums reporting but never really solving my problem, sometimes people didn't even know they had this bug.