Yes, sync ubershaders are completely unusable sadly (10 - 15 fps)
So, there's more cache-ing going on then.
What is strange is that if i reply a scene without advancing too much (half an hour maybe), it is flawless. After i play an extra hour and come back to that scene, it stutters...like it forgets or overwrites the shaders from that scene after a short while... (the size gets bigger and bigger though, for both .cache file and .uidcache)
So, there's more cache-ing going on then.
What is strange is that if i reply a scene without advancing too much (half an hour maybe), it is flawless. After i play an extra hour and come back to that scene, it stutters...like it forgets or overwrites the shaders from that scene after a short while... (the size gets bigger and bigger though, for both .cache file and .uidcache)