Mount Points

I’ve been using Mount Points for about a year to manage customisation of my protagonist’s clothes, hair, etc. It’s been an excellent solution for this.

The game is on Steam and has about 700 different items defined using Mount Points. I’ve just added another 81 items for a Halloween update, and Unity is presenting the following error on build:

Serialized file size of 4.18 GB (4487047916 bytes) exceeds maximum. File name: 'I:/Unity/Resequenced/Temp/StagingArea/Data/resources.assets'. Serialized files over 4.00 GB (4294967295 bytes) cannot be loaded by the player. Some likely ways to reduce this are utilizing asset bundles, re-balancing asset locations, or limiting their serialized size e.g. limiting the maximum texture sizes.

There’s also a general thread about this issue: Bug: 4GB limit to Textures in standalone build

So it appears I can’t add any more items as /Resources has exceed 4GB. Has anyone else reported this limitation? Is there a workaround for MP?