Tac2
Terrarian
Okay so I found out that the fps/game slowing down issue is not just with thorium mod armors but other mods that add armors/vanity items as well. Vanilla items do not cause an issue at all however. My gf who has an older computer of mine, that is significantly less powerful in every way to my current rig has 0 issues with fps/game slowing down. no matter what armor she wears.