(a) About the WeChat mini game cache size
the WeChat game limited cache size to 50MB,it means that all download resources only had 50MB size to cache.
so, if all your resources is larger than 50MB,when you still to download some file, it will have problems on save file
you can use cleanAllAssets and cleanOldAssets to clean some unused file to ensure that your size is below 50MB
(b) About the large image of game.
if you use an image that is larger than canvas size, one suggest is that you can culling the large image to some smaller image nodes, and make up those nodes to realized the bigger image.
the biggest size that cocos supports is 2048*2048
©About “My scene has too many objects and works very slowly”
if the reasons for works slowly is too many draw call ,you can use dynamicAtlas to improve it.the dynamicAtlas is turned off by default on WeChat mini game.you can add the code in game.js
dynamicAtlasManager.enabled = true;
and turn on the “cc.macro.CLEANUP_IMAGE_CACHE”
then you can use dynamicAtlas on WeChat mini game.
be attention,if you open the dynamicAtlas,it will cause memory rises.
for ttflabel you can turn on the “Batch as Bitmap” property
also, you can try to use “Async Load Assets” to improve the loading speed