That's just the way the game works, there is no consistency between FOV and sensitivity. Which is why it's so tedious to analyze, but I got the mod working now so I'm gonna try to go through everything
Since the rounding for the sensitivity changes depending on the value, this game has three different entries to accommodate this. Use the one that gives you the least discrepancy.
Some Roblox games can't be added due to various issues:
SCP: Roleplay / Site 006 Roleplay - A lot of packet loss resulting in a very janky mouse input.