Well, it seems I'm not the only one with issues. I guess it's best to make other people aware of the technical issues out there, because it seems everyone has different problems with theirs.
I started legacy again with SRR. I suppose it's not too bad because beating and knocking out opponents will go towards the 1k stuns achievement. I just hope it doesn't freeze on me again.
Anyway, going back to what I said in my first paragraph in my first post, has anyone else experienced this issue with jabs? I only just noticed it was acting weird just after I unlocked the 10k jabs achievement. Every time I throw a jab, the game freezes for a second. It's only started happening after it was unlocked, in which the game froze for a second when it popped up, which happens in quite a lot of games.
Minor, but very irritating. Does anyone else with this achievement experience this issue? Very buggy game that needs a patch.