CSL should use CSR chipset, I‘m using the same! Before I tried a Digitus dongle, also CSR. As it didn‘t fit in Superpi case because of its size, I removed housing of both and both modules look quite similiar, just the CSL has a very bright LED compared to the Digitus ;) Also MAC adress tells me it‘s from the same Chinese manufacturer.
I also tried an Asus dongle with Broadcom chipset, but here I had same problem like with Pi3 B‘s internal Broadcom chipset: Inputs where much too sensitive, for example at steering at Mario Kart.
But as discussed, also tried with internal Broadcom chipset of Pi3 B+ in beta and there it seems work fine. (Not too sensitive and also no known input lag of Pi3 B)
So I hope there is a final version for B+ soon too. I‘m really looking forward because for me there is no real alternative to the really good, new 8bitdo controllers!
@pablo2k1 please, people took time to respond you with very specific instructions... the least you should do is to try it yourself and see if it suits you (as suggested) rather than asking if anyone else would also suggest you the same thing.
Here's a quick update: I tried installing Retropie and managed to get games like Tron and Star Trek to work. Woohoo! The only problem is that of course, Recalbox is nicer. It's easier to install, the attractor is nice, it's faster and it just flat-out works better.
So what's the difference? Why does Retropie work for these games but Recalbox not?