Disable destination Alpha

[lookerup]

What is that? and what are the benefits of checking the option?

I'm trying to squeeze as much performance for a smash tournament. There is a small freeze at the beginning of a match with 4 players. Not problematic if it's for fun, but for a tournament i would like dolphin to run it without any problems

[JMC47]

It won't do anything on a modern computer. What you want to do to prevent the freeze at the beginning of a match is find one build you like, and load it up with all the characters once (not in one run or anything, just do all the moves/stages) and that way you won't get any freezing/locking up later. The shadercache is likely what you're seeing.