Game is ridiculously slow and only my gameplay mods are working not content mods

Hey guys! So I've had Sims for more than 10 years and I love this game but ever since I got a new computer the problems have started. SO its now a Sims 3 and the so slow i mean its ridiculous! It pauses for about 30 seconds and then gives me about 5-10 seconds of normal gameplay, that drives me nuts! So anyways my mods are so crazy now too so only the mods that affect gameplay are working but not my content mods and not only that but my load up is horribly slow about 100-160 min? *!! so anyways I have tried deleting the folders and putting them back and deleting the resource.cfg file and redownloading and absoutlely nothing is helping I actually didnt sleep for 3 days because i was trying to figure this problem out! i finally gave up until yesterday when i was playing one random little clothing mod popped up and the reignited the flame. so now i am determined to now fix this problem! SO please guys im begging you please help me fix this lagging and why are only the gameplay mods working and not content?! does it have something to do with windows 10? also i know that it can sense it because when i take them out and only have like 50 mods it takes like 10-30 min to load but if i have my mods then it takes 3-4 times longer to load up so I know it reads them yet theyre not showing up. And i know im kind of on the right path because for the longest time neither types of mods would work but now i have atleast the gamplay mods working. Thank you sorry this is so long!