Well most of the time its anything above 100-150 MB so stuff like Sim Settlements or Old World Radio - Boston. I use Firefox version 53.0.3 (64-bit). And i never got to asking because of two reasons i give up quickly so i really don't put too much time into whatever i do and it really didn't bother me too much, but now I've started play stuff like Fallout:NV and Fallout 4 again and I add big mods into my game. Also ive downloaded TTW for FNV and it downloaded fine no corruption nothing, so i'm pretty sure it may be something wrong with nexus.