Workshop Crashing Older Computer's Clients?

I am using a Workshop collection for my download. A player who’s computer can barely run Windows Vista, as well as a few older XP computer players have been reporting that their Garry’s Mod crash on start. I wasn’t sure if this is a server issue or a client issue, that’s why it’s in Developer Discussion. Anyone know how to fix this issue?

Get a better PC or remove the mods your/their PC can’t handle.

I think I found a repair for now. Disabled their Downloading files from the server(except maps), and had them sub to the collection.

You’ve just described every computer ever created.

Fine, It can’t even run win 7 basic.