I having so low fps on modpacks like projekt ozone 2 ,forever Stranded, skyfactory and others.
My question is your pc spec for minecraft mods.
My pc spec
amd radeon hd 7700 series
ram 4 gb
Intel celeron CPU g1820 2.70ghz
Games gta 5 normal details 30-60 fps.
Cs go 60-120 fps.