i have tried to solve this problem but can't. i did do all what they said, chromium, pepper-flash cache size increasing, erasing, setting... one thing is when i was using old manjaro linux last month this problem not happened. during one month i think all chromium, flash and manjaro version up. so we don't know exactly which one of them is problem. and i have tested it on puppy linux, very well working. but i don't like to use puppy haha