Sketch on Uno stops working if bigger than 18900 bytes out of 32256 available??

I have an odd issue, any sketch I upload to my Uno which is larger than 18900 bytes makes the 128x64 OLED stop working.

Just trying to see in anyone has ever seen this happen, and if anyone has any insight as to why? Only thing I can think of is that physical memory is damaged inside my Uno maybe??

PS not sure why moderator delete my post first time I posted it, I am asking something which isn't allowed?


Your "first post" is here...

I've said it before. I'll say it again. Don't crosspost.

Thread locked.